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Showing posts with the label Algorithm

Find number of days in a month in C | Cpp | Java | Go | php

C Program #include<stdio.h> int main() { int m,y; printf("Enter any month, say(1-12): "); scanf("%d",&m); switch(m) { case 1: case 3: case 5: case 7: case 8: case 10: case 12: printf("31 days"); break; case 4: case 6: case 9: case 11: printf("30 days"); break; case 2: printf("Enter the year: "); scanf("%d",&y); if(y%400 == 0 || y%100 != 0 && y%4 == 0) { printf("29 days"); } else { printf("28 days"); } break; default: printf("Invalid input"); } } C++ Program #include<iostream> using namespace std; int main() { int m,y; cout << "Enter any month, say(1-12): "; cin >> m; switch(m) { case 1: case 3: case 5: case 7: case 8: case 10: case 12: cout << "31 days"; break; case 4: case 6: case 9: case 11: cout << &qu
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Print Week day program in C | Cpp | Java | php | go

Program Description Program to print weekdays based on the user input, Example: For 0 print Sunday, 1 print Monday and so on. C Program #include<stdio.h> int main() { int day; printf("Enter weekday, say(0-6): "); scanf("%d",&day); switch(day) { case 0: printf("Sunday"); break; case 1: printf("Monday"); break; case 2: printf("Tuesday"); break; case 3: printf("Wednesday"); break; case 4: printf("Thrusday"); break; case 5: printf("Friday"); break; case 6: printf("Saturday"); break; default: printf("Invalid input"); } return 0; } C++ Program #include<iostream&g using namespace std; int main() { int day; cout << "Enter any day, say(0-6): "; cin >> day; switch(day) { case 0: cout << "Sunday"; break; case 1: cout << "Monday&q
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Program to check a year is leap year or not.

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Problem Description If a year is divisible by 4, then it is called leap year. But all the centuries are divisible by 4, so to check a century is a leap year or not, we check divisibility by 400 of a year. If a century is divisible by 400 then the century is called leap year otherwise not. Basic Logic Snippets (In C) if(year % 100 == 0) { if (year % 400 == 0) { printf("%d is a leap year",year); } else { printf("%d is not a leap year",year); } }else { if(year % 4 == 0) { printf("%d is a leap year",year); } else { printf("%d is not a leap year",year); } } Output Test-1 Enter any year: 1996 1996 is a leap year Test-2 Enter any year: 1600 1600 is a leap year Test-3 Enter any year: 1800 1800 is not a leap year Improved your logic Note: Generate wrong output in some cases, but helpful to understand upcoming logic if(year % 100 == 0 && year % 400 ==0 || year % 4 == 0) { printf("%d is a leap year
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Program to calculate telephone bill

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Program description Program to find the telephone bill as per the following rules -: Call Range Bill <=100 Rs./- 0 per call 101-200 Rs./- 1 per call 201-300 Rs./- 0.50 per call 301-500 Rs./- 0.20 per call >500 Rs./- 0.10 per call Rental Charges Rs./- 130 C Program #include #define RENTAL 130 int main() { int nc; float bill; printf("Enter the number of calls: "); scanf("%d",&nc); if(nc <= 100) { bill = 0; } else if(nc <= 200) { bill = (nc - 100) * 1 + 0; } else if(nc <= 300) { bill = (nc - 200) * 0.50 + 100 + 0; } else if(nc <= 500) { bill = (nc - 300) * 0.20 + 50 + 100 + 0; } else { bill = (nc - 500) * 0.10 + 40 + 50 + 100 + 0; } //final bill including rental bill += RENTAL; printf("Total bill = %.2f",bill); return 0; } C++ Program #include #define RENTAL 130 using namespace std; int main() { int
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Program to find the max of 4 number

C Program #include int main() { int a,b,c,d,max; printf("Enter any 4 numbers: "); scanf("%d%d%d%d",&a,&b,&c,&d); if(a > b && a > c && a > d) { max = a; } else if(b > c && b > d) { max = b; } else if(c > d) { max = c; } else { max = d; } printf("Max = %d",max); return 0; } C++ Program #include using namespace std; int main() { int a,b,c,d; cout << "Enter any 4 numbers: "; cin >> a >> b >> c >> d; int max; if(a > b && a > c && a > d) { max = a; } else if(b > c && b > d) { max = b; } else if(c > d) { max = c; } else { max = d; } cout << "Max = " << max << endl; return 0; } Java Program import java.util.Scanner; class Max4 { public static void main(String args[]) { int a,b,c,d; Scanner sc = new Scanner(System.in); Syste
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Program to find the max of 3 numbers

C Program #include<stdio.h> int main() { int a,b,c,max; printf("Enter any 3 numbers: "); scanf("%d%d%d",&a,&b,&c); if(a > b) { if(a > c) { max = a; } else { max = c; } }else { if(b > c) { max = b; }else { max = c; } } printf("Max = %d",max); } C++ Program #include using namespace std; int main() { int a,b,c; cout << "Enter any 3 numbers: "; cin >> a >> b >> c; int max; if(a > b) { if(a > c) { max = a; } else { max = c; } }else { if(b > c) { max = b; }else { max = c; } } cout << "Max = " << max << endl; } JAva import java.util.Scanner; class Max3 { public static void main(String args[]) { int a,b,c; Scanner sc = new Scanner(System.in); System.out.print("Enter any 3 numbers: "); a = sc.nextInt(); b = sc.nextInt(); c = sc.nextInt(); int max;
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Program to find the max of two numbers

C Program #include<stdio.h> int main() { int a,b,max; printf("Enter any two numbers: "); scanf("%d%d",&a,&b); if(a > b) { max = a; } else { max = b; } printf("Max = %d",max); } C++ Program #include<iostream> using namespace std; int main() { int a,b; cout << "Enter any two numbers: "; cin >> a >> b; int max; if (a > b) { max = a; } else { max = b; } cout << "Max = " << max << endl; return 0; } import java.util.Scanner; class Max2 { public static void main(String args[]) { int a,b; Scanner sc = new Scanner(System.in); System.out.print("Enter any two numbers: "); a = sc.nextInt(); b = sc.nextInt(); int max; if(a > b) { max = a; } else { max = b; } System.out.println("Max = "+max); } } package main import "fmt" func
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Program to check a number is even or odd

C Program #include<stdio.h> int main() { int n; printf("Enter any number: "); scanf("%d",&n); if(n%2 == 0) { printf("%d is even",n); } else { printf("%d is odd",n); } return 0; } C++ Program #include<iostream> using namespace std; int main() { int n; cout << "Enter any number: "; cin >> n; if(n % 2 == 0) { cout << n << " is even"; } else { cout << n << " is odd"; } return 0; } Java Program import java.util.Scanner; class CheckEvenOdd { public static void main(String args[]) { Scanner sc = new Scanner(System.in
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Program to check a number is positive, negative or zero

C Program #include<stdio.h> int main() { int n; printf("Enter any number: "); scanf("%d",&n); if( n > 0) { printf("%d is positive",n); } if (n < 0) { printf("%d is negative",n); } if (n == 0) { printf("%d is zero",n); } return 0; } C++ Program #include<iostream> using namespace std; int main() { int n; cout << "Enter any number: "; cin >> n; if( n > 0) { cout << n << " is positive"; } if (n < 0) { cout << n << " is negative"; } if (n == 0) { cout << n << " is zero";
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Program to compute the distance between two points

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The distance of two points Program Description As shown in the above figure, two points p1(x1,x2) and p2(x2,y2) is given as shown in the above figure, The objective of the program to compute the distance of two points p1 and p2. C Program #include<stdio.h> #include<math.h> int main() { float x1,y1,x2,y2,distance; printf("Enter first point x1,y1: "); scanf("%f%f",&x1,&y1); printf("Enter second point x2,y2: "); scanf("%f%f",&x2,&y2); distance = sqrt((x2 - x1) * (x2 - x1) + (y2 - y1) * (y2 - y1)); printf("Distance = %.2f",distance); return 0; } C++ Program #include<iostream> #include<math.h> using namespace std; int main() { float x1,y1,x2,y2,distance; cout << "Enter first point x1,y1: "; cin >> x1
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Program to Compute real roots of a quadratic expression

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Problem Description Program to find the real roots of a quadratic equation as given below ax 2 + bx + c is a quadratic equation, we need to find the real root for these type of expressions, the formula to find the root is as given below Where Discriminant  of a Quadratic represented by D = b 2  – 4ac, which reveals the type of roots as per the following conditions If D >0, the roots would be real If D = 0, then both roots would be equal If D < 0, the roots would be imaginary. C Program #include<stdio.h> #include<math.h> int main() { int a,b,c; float d,r1,r2; printf("Enter 3 constant a,b,c: "); scanf("%d%d%d",&a,&b,&c); d = b * b - 4 * a * c; if (d < 0) { printf("Roots are imagenary"); }else { r1 = (b + sqrt(d)) / (2 * a); r2 = (b - sqrt(d)) / (2 * a); printf("Root1 = %.2f\nRoot2 = %.2f",r1,r2); } return 0; } C++ program #include<iostream> #include<math.
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Program to Compute Change

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Problem Explained Input an amount from a user as a decimal number, such as 11.56 Conver the amount (e.g, 11.56) as (1156 cents) Calculate the change as per the following rules... 1 Doller 100 Cents 1 Quarter 25 Cents 1 Dime 10 Cents 1 Nickel 5 Cents 1 Pannie 1 Cent C Programming #include<stdio.h> int main() { float amount; int dollars,quarters,dimes,nickels,cents,pennies; printf("Enter the amount: "); scanf("%f",&amount); cents = (int)(amount * 100); dollars = cents / 100; cents = cents % 100; quarters = cents / 25; cents = cents % 25; dimes = cents / 10; cents = cents % 10; nickels = cents / 5; pennies = cents % 5; printf("Your amount %.2f consists of \n",amount); printf("%d dollers\n",dollars); printf("%d quarters\n",quarters); printf("%d dimes\n",dimes); printf("%d nickles\n",
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Program to convert time from seconds to hours, minutes and seconds

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C Programming #include<stdio.h> int main( ) {              int seconds;              int hours,minutes,remainingSeconds;              printf("Enter the time in seconds: ");              scanf("%d",&seconds);                  hours = seconds / 3600;              remainingSeconds = seconds % 3600;              minutes = remainingSeconds / 60;              remainingSeconds = remainingSeconds % 60;                  printf("%d seconds is %d hours %d minutes %d seconds",seconds,hours,minutes,remainingSeconds);                  return 0; } C++ Programming #include<iostream> using namespace std; int main( ) {             int seconds;                cout << "Enter the time in seconds: ";            cin >> seconds;                int remainingSeconds;                int hours = seconds / 3600;            remainingSeconds = seconds % 3600;            int minutes = remainingSeconds / 60
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Area of Circle

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C Programming #include<stdio.h> #define PI 3.14156 int main() {     float r,area;         printf("Enter the radius: ");     scanf("%f",&r);         area = PI * r * r;         printf("Simple interest = %.2f",area);     return 0; } C++ Programming #include<iostream> #define PI 3.14156 using namespace std int main() {     float r,area;         cout<<"Enter the radius: ";     cin>>r;         area = PI * r * r;         cout << "Area of circle = "<<area<<endl;         return 0; } Java import java.util.Scanner; class CircleArea {     public static void main(String args[]) {         final float PI = 3.14156f;                 float r,area;                 Scanner sc = new Scanner(System.in);         System.out.print("Enter the radius: ");         r = sc.nextFloat();                 area = PI * r * r;                 System.out.println(&
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Swap two numbers

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C Programming #include<stdio.h> int main() { int a,b,t; printf("Enter any two numbers: "); scanf("%d%d",&a,&b); t = a; a = b; b = t; printf("a = %d \t b = %d",a,b); } C++ Programming #include<iostream> using namespace std; int main() { int a,b,t; cout << "Enter any two numbers: "; cin >> a >> b; t = a; a = b; b = t; cout << a << "\t" << b; return 0; } Java import java.util.Scanner; class Swap { public static void main(String args[]) { int a,b,t; Scanner sc = new Scanner(System.in); System.out.print("Enter any two numbers: "); a = sc.nextInt(); b = sc.nextInt(); t = a; a = b; b = t; System.out.println("a = "+a+" \t b = "+b); } } Go Lang package main import "fmt" func main() { var a,b,t int32 fmt.Print("Enter any two numbers: &q
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Calculate simple interest

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C Programming #include<stdio.h> int main() { int p,t; float r,si; printf("Enter principal,time and rate: "); scanf("%d%d%f",&p,&t,&r); si = p * t * r / 100; printf("Simple Interest = %.2f",si); return 0; } C++ Programming #include<iostream> using namespace std; int main() { int p,t; float r; cout << "Enter principal, time and rate: "; cin >> p >> t >> r; float si = p * t * r / 100; printf("Simple Interest = %.2f",si); return 0; } Java Programming import java.util.Scanner; class SimpleInterest { public static void main(String args[]) { int p,t; float r,si; Scanner sc = new Scanner(System.in); System.out.print("Enter principal, time and rate: "); p = sc.nextInt(); t =
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Sum of two numbers

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C Programming #include<stdio.h> int main() { int a,b,sum; printf("Enter any two numbers: "); scanf("%d%d",&a,&b); sum = a + b; printf("Total = %d",sum); return 0; } C++ Programming #include<iostream> using namespace std; int main() { int a,b; cout << "Enter any two numbers: "; cin >> a >> b; int sum = a + b; cout<<"Total = "<<sum; return 0; } Java import java.util.Scanner; class Sum { public static void main(String args[]) { int a,b; Scanner sc = new Scanner(System.in); System.out.print("Enter any two numbers: "); a = sc.nextInt(); b = sc.nextInt(); int sum = a + b; System.out.print("Total = "+sum); } } Go Lang
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Say Hello World

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C programming #include<stdio.h> int main() { printf("Hello World"); return 0; } C++ Programming #include<iostream> using namespace std; int main() { cout << "Hello World"; return 0; }  Java Programming class HelloWorld { public static void main(String args[]) { System.out.println("Hello, World"); } }  Go Lang package main import "fmt" func main() { fmt.Print("Hello World") } php <?php echo "Hello world"; ?>  
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String in golang

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Strings are sequence of characters with definite length and can be created by enclosing in double quotes "Hello Go" and back ticks `Hello Go`.  A string is a sequence of characters. Strings are the collection of individual bytes, where each character occupy single byte. Characters out of the ASCII characters (can say characters from other languages) occupy more than one byte. A string can be created by enclosing in double quotes "Hello Go" or backticks `Hello Go`. The difference between double quotes and backticks is that double quotes allow escape sequences like \n (newline) and \t (tab) and parses them but backticks don't. Example-1: package main import "fmt" func main( ) {         fmt.Println(len("Hello Go"))         fmt.Println("Hello Go"[1])         fmt.Println("Hello"+" "+"Go") } Output:  8 101 Hello Go   Output Explained: fmt.Println(len("Hello Go"))
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Inline V/S Block Level Element

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Floating point Data types in Go lang

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As we have discussed, In our previous article Data types in go lang , In Go lang Numbers can be categorized into two broad categories. Integral Numbers Floating point Numbers We have already discussed integral numbers In this article we will discuss all floating point numbers. Floating point Numbers Floating point numbers are those which contains decimal places, for example (2.34 , -90.435 , 0.00007) Rules for floating point numbers  Floating point number can contain decimal places, For example (0.006, 2.45) Can be +ve and -ve. Floating point number can be written in two formats Fixed format , example (0.007) Exponent format , example (0.7 E -4) 0.7 E -4 is equivalent to 0.7 * 10 <sup>-4</sup> In 0.7 E -4, 0.7 (part before e) is called mantissa and -4 (part after E) is called exponent. Exponent format is used when a number is too large or too small to represent in decimal places. Floating point number can be of 32bits or 64bits in size in g
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Escape Sequence | Formatted Printing | Interview Questions

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Sum of two numbers

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C Programming #include<stdio.h> int main() { int a,b,sum; printf("Enter any two numbers: "); scanf("%d%d",&a,&b); sum = a + b; printf("Total = %d",sum); return 0; } C++ Programming #include<iostream> using namespace std; int main() { int a,b; cout << "Enter any two numbers: "; cin >> a >> b; int sum = a + b; cout<<"Total = "<<sum; return 0; } Java import java.util.Scanner; class Sum { public static void main(String args[]) { int a,b; Scanner sc = new Scanner(System.in); System.out.print("Enter any two numbers: "); a = sc.nextInt(); b = sc.nextInt(); int sum = a + b; System.out.print("Total = "+sum); } } Go Lang
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Operators in C Language| Part-4

Unary operators Unary operator are those which only require one operand(argument) to operate. + , - , ++, --, typecast and sizeof are some unary operators in C programming. +5, -5 are the example of +,- unary operators. which represents +ve and -ve values. Unary operators have high priority than binary operators, so unary operators are always evalutes first. Increment / Decrement operator ++, -- are called increment and decrement operators. Increment and decrement operators are available in two versions Prefix Postfix Difference b/w prefix and postfix Prefix Postfix int a = 5; ++a; printf("%d",a); // 6 int a = 5; a++; printf("%d",a); // 6 int a = 5,b; b = ++a; printf("%d %d",a,b);// 6 6 int a = 5,b; b = a++; printf("%d %d",a,b);//6 5 Example of increment and decrement operators Example-1: int a = 3, b = 4,c; c = ++a * ++b; printf("%d %d %d",a,b,c); /
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Printing in C programming

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Printing in C In C for printing purpose, We Use A Function Called printf( ) . A function is a small program used to perform a specific task. The function receives some input known as an argument and produces some output called return value. Functions are always suffixed with parenthesis ( ). Syntax of printf( ) printf("Control String",[List or Variable]); Note: Control string is a sequence of characters which you want to print. ([ ]) square brackets around the list or variable represent that it is optimal. Example Of printf( ) printf("hello"); //Print hello int a=5,b=6; printf("a=%d b=%d",a,b); //print the value of a and b. int a=5,b=6; //Varialbe Declaration printf("%d",a+b); //Print 11. Note: In printf( ) expression can be written .The example is given above. The first program, Say Hello World in C programming /*program to print the "Hello world"*/ #include<stdio.h> int main() { printf(
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Arrays in C Language

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Suppose you want to store the 10 numbers. The one choice is to create a 10 different variable but it is difficult when number of variable are increases. So the next solution that is more feasible is array. An array is the collection of various similar type elements stored in contiguous memory locations. All the array elements share the common name. To uniquely identify each element an index or subscript is associated with the element. so the array is also known as subscript variable . In the given figure arrangement of array elements are shown. The address of the first element is 100. If the given array is of type integer and integer occupies 2 bytes then the next element in the array has address 102,104 etc as given in the figure. How to access array elements using subscript operator it is also shown in the given figure. Array index always start with 0. To access array element subscript operator is used.[] is called subscript operator.a[0] read a of 0 or 0th element of a C
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Program to check a year is leap year or not.

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Problem Description If a year is divisible by 4, then it is called leap year. But all the centuries are divisible by 4, so to check a century is a leap year or not, we check divisibility by 400 of a year. If a century is divisible by 400 then the century is called leap year otherwise not. Basic Logic Snippets (In C) if(year % 100 == 0) { if (year % 400 == 0) { printf("%d is a leap year",year); } else { printf("%d is not a leap year",year); } }else { if(year % 4 == 0) { printf("%d is a leap year",year); } else { printf("%d is not a leap year",year); } } Output Test-1 Enter any year: 1996 1996 is a leap year Test-2 Enter any year: 1600 1600 is a leap year Test-3 Enter any year: 1800 1800 is not a leap year Improved your logic Note: Generate wrong output in some cases, but helpful to understand upcoming logic if(year % 100 == 0 && year % 400 ==0 || year % 4 == 0) { printf("%d is a leap year
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Data types in Java

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What is Data type In Java every variable have some type.  For example in the code snippet below x should be int and b should be boolean type variable. x = 10; b = true; Similarly in Java every expression also have some type. For example in the following code snippet if a + b + c would result int type result because a, b and c are int type variables. int a, b, c, d; a = 1; b = 1; c = 1; d  = a + b + c; Strictly type checking  In Java, each type is strictly defined means byte have range from -128 to 127, so value out of from this range is not acceptable by byte type. Each assignment is strictly checked for type compatibility. Due to above two reason java is called strongly type checked language.   Primitive Data Types 8 Primitive Data types in Java Signed / Unsigned Data types Examples int a = 10;  ( ✓ ) int a = -10;  ( ✓ ) float x = -5.8;  ( ✓ ) char ch = -'a';  (✕) boolean b = -true;  (✕) boolean b = true;  ( ✓ ) Except boolean and
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