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C Program to Print Number of Days in a Month

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How to write a C Program to Print Number of Days in a Month using Else If statement and Switch Condition with examples?.

As we all know, the total number of days in :

  • January, March, May, August, October, and December = 31 Days
  • April, June, September, and November = 30 Days
  • February = 28 or 29 Days

C Program to Print Number of Days in a Month using Else If

This C program will ask the user to enter any number between 1 to 12, where 1 is January, 2 = February, 3 = March,………., and 12 = December.

Based on the user entered integer value, this program will print the number of days in a month. To accomplish this goal, we are using Else If Statement.

/* C Program to Print Number of Days in a Month using Else If Statement */

#include <stdio.h>

int main()
{
  int month;
  printf(" Please Enter the Month Number 1 to 12 (Consider 1 = January, and 12 = December) :  ");
  scanf("%d", &month);
  
  if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12 )
  {
  	printf("\n 31 Days in this Month");  	
  }
  else if ( month == 4 || month == 6 || month == 9 || month == 11 )
  {
  	printf("\n 30 Days in this Month");  	
  }  
  else if ( month == 2 )
  {
  	printf("\n Either 28 or 29 Days in this Month");  	
  } 
  else
    printf("\n Please enter Valid Number between 1 to 12");
  
  return 0;
}

OUTPUT

C Program to Print Number of Days in a Month using Else If Statement 1

Let me enter the month number as 5

C Program to Print Number of Days in a Month using Else If Statement 2

Let me enter the month number as 9

C Program to Print Number of Days in a Month using Else If Statement 3

This time, we will enter the wrong value: 15

C Program to Print Number of Days in a Month using Else If Statement 4

C Program to return Number of Days in a Month using Switch Condition

It is an ideal approach to deal with multiple conditions. In this program, we are using the Switch Case approach to print the number of days in a month.

/* C Program to Print Number of Days in a Month using Switch Condition */

#include <stdio.h>

int main()
{
  int month;
  printf(" Please Enter the Month Number 1 to 12 (Consider 1 = January, and 12 = December) :  ");
  scanf("%d", &month);
  
  switch(month )
  {
  	case 1:
  	case 3:
	case 5: 	
	case 7:
	case 8:
	case 10:
	case 12:			  	
	  	printf("\n 31 Days in this Month");
	  	break;
	
	case 4:	
	case 6:
	case 9:
	case 11:			    	
	  	printf("\n 30 Days in this Month");  
		break;
	
	case 2:
	  	printf("\n Either 28 or 29 Days in this Month");  
	
	default:		  	
	    printf("\n Please enter Valid Number between 1 to 12");
  }
  return 0;
}

OUTPUT

C Program to Print Number of Days in a Month using Switch Condition 1

Let me try different value

C Program to Print Number of Days in a Month using Switch Condition 2