Как я могу заставить функцию scanf работать в этом случае?

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<pre>
/*
This project displays number of days in a month

Assumption:- February is assumed to have 28 days
             All other months have 30 or 31 days
*/

#include <stdio.h>
#include <stdlib.h>

int main()

{
    int month_value;
    char user_choice='y';

    while(user_choice=='y'||user_choice=='Y')
    {
        system("cls");
        printf("Enter the serial number of month:- ");
        scanf("%d",&month_value);
        if(month_value>=1&&month_value<=12)
        {
            if(month_value%2!=0)
            {
                printf("The number of days in this month is:- 31\nDo you want to check for another month?(y/n)\n");
                scanf("%c",&user_choice);  // this statement is not getting executed even if condition is true

            }
            else if(month_value%2==0 && month_value!=2)
            {
                printf("The number of days in this month is:- 30\nDo you want to check for another month?(y/n)\n");
                scanf("%c",&user_choice);   // this statement is not getting executed even if condition is true
            }
            else
            {
                printf("The number of days in this month is:- 28\nDo you want to check for another month?(y/n)\n");
                scanf("%c",&user_choice);   // this statement is not getting executed even if condition is true
            }

        }
        else
        {
            printf("ERROR\nWould you like to re-enter the value?(y/n)\n");
	        scanf("%c",&user_choice);   // this statement is not getting executed even if condition is true
        }
    }
    return 0;
}

Что я уже пробовал:

Я потратил 4-5 часов, просто думая, какая логическая ошибка может присутствовать, но я не мог понять ее. Пожалуйста помочь.На мой взгляд, это должно сработать.

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