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 << "30 days";
   break;
  case 2:
   cout << "Enter the year: ";
   cin >> y;
   if(y%400 == 0 || y%100 != 0 && y%4 == 0) {
    cout << "29 days";
   } else {
    cout << "28 days";
   }
  break;
  default:
   cout<<"Invalid input";
 }
 
}

Java Program

import java.util.Scanner;
class MonthDays {
 public static void main(String args[]) {
 
  Scanner sc = new Scanner(System.in);
  System.out.print("Enter any month,say(1-12): ");
  int m = sc.nextInt();
  
  switch(m) {
   case 1:
   case 3:
   case 5:
   case 7:
   case 8:
   case 10:
   case 12:
    System.out.println("31 days");
    break;
   case 4:
   case 6:
   case 9:
   case 11:
    System.out.println("30 days");
    break;
   case 2:
    System.out.print("Enter the year: ");
    int y = sc.nextInt();
    if(y%400 == 0 || y%100 != 0 && y%4 == 0) {
     System.out.println("29 days");
    } else {
     System.out.println("28 days");
    }
   break;
   default:
    System.out.println("Invalid input");
  }
  
 }
}

Go Lang

package main
import "fmt"

func main() {
 var m,y int
 
 fmt.Print("Enter any month, say(1-12): ")
 fmt.Scan(&m)
 
 switch m {
  case 1,3,5,7,8,10,12:
   fmt.Print("31 days")
  case 4,6,9,11:
   fmt.Print("30 days")
  case 2:
   fmt.Print("Enter the year: ")
   fmt.Scan(&y)
   
   if y%400 == 0 || y%100 != 0 && y%4==0 {
    fmt.Print("29 days")
   } else {
    fmt.Print("28 days")
   }
  default:
   fmt.Print("Invalid input")
 }
}

PHP

$m = $_POST['m'];
$y = $_POST['y'];
switch($m) {
 case 1:
 case 3:
 case 5:
 case 7:
 case 8:
 case 10:
 case 12:
  print("31 days");
  break;
 case 4:
 case 6:
 case 9:
 case 11:
  print("30 days");
  break;
 case 2:
  if($y%400 == 0 || $y%100 != 0 && $y%4 == 0) {
   print("29 days");
  } else {
   print("28 days");
  }
 break;
 default:
  print("Invalid input");
}