Getting the Total Number of Days in a Month Using If-else and Switch Statements in C#

Last Updated : 28 May, 2020

Given a number N, the task is to write a C# program to print the number of days in the Month N.

Examples:

Input: N = 12
Output: 31

Input: N = 2
Output: 28/29

This task can be done using the following approaches:

1. Using if else statement : Appropriate month number is checked and then number of days in a month is print using else if statement. Number of days are follows :

Month = [1, 3, 5, 7, 8, 10, 12] , Number of days = 31
Month = [2] , Number of days = 28/29
Month = [4, 6, 9, 11] , Number of days = 30

Below is the implementation of the above approach:

Output:

C#

// C# Program to Print Number of Days 
// in a Month using Else If Statement 
  
using System; 
  
public class GFG{ 
  
    // Function to print the Number 
    // of Days in a N 
    static void PrintNumberofDays(int N)  
    { 
       // Check for the Ns 
        if (N == 1 || N == 3 || N == 5 || N == 7 
          || N == 8 || N == 10 || N == 12) { 
              Console.Write("31"); 
        }  
          
        else if (N == 4 || N == 6 || N == 9 || 
               N == 11) { 
               Console.Write("30"); 
        }  
          
        else if (N == 2) { 
               Console.Write("28/29"); 
        } 
    } 
      
    // Driver Code 
    static public void Main () 
    { 
        int N = 5; // 1 <= N <= 12 
        PrintNumberofDays(N); 
    } 
}

Output:

2. Using Switch Condition : Same as Else if , here month number is checked and it is redirected to cases,and then number of days in a month is print. Below is the implementation of the above approach:

C#

// C# Program to Print Number of Days 
// in a Month using Switch Condition 
  
using System; 
  
public class GFG{ 
  
    // Function to print the Number 
    // of Days in a N 
    static void PrintNumberofDays(int N)  
    { 
        // Check for the N 
        switch(N ) 
        { 
            case 1: 
            case 3: 
            case 5:      
            case 7: 
            case 8: 
            case 10: 
            case 12:              
                Console.Write("31"); 
                break; 
              
            case 4:  
            case 6: 
            case 9: 
            case 11:                  
                Console.Write("30");  
                break; 
              
            case 2: 
            Console.Write("28/29"); 
            break; 
        } 
    } 
      
    // Driver Code 
    static public void Main () 
    { 
        int N = 5; // 1 <= N <= 12 
        PrintNumberofDays(N); 
    } 
}