Do While Character Input Error

My code isn't allowing me to input a character after I input a number.

Code:

---

#include <stdio.h>
#include <string.h>
int main (void)
{
        char choice;
        int num;
       
        do
        {
               
               
                printf("enter a number: \n");
                scanf("%d",&num);
               
               
                printf("enter another? \n");
                scanf("%c",&choice);
               
               
               
        }while (choice!='y'||choice!='Y');
       
        return 0;       
}

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you should have search forum - this question is been answered once a week...

scanf formats like %s, %d etc leave everything that is not parsed in the input stream - in your case %d format leaves \n character

%c format does not skip anything - so it reads \n character left from the previous scanf and puts it into the choice variable

so you need to flush the buffer from what is left there before calling the second scanf

How to do it - search forum or FAQ, there is a lot of samples of that procedure (just do not call fflush as it is undefined for input streams)

Quote:

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Originally Posted by crackpat

My code isn't allowing me to input a character after I input a number.

Code:

---

#include <stdio.h>
#include <string.h>
int main (void)
{
        char choice;
        int num;
       
        do
        {
               
               
                printf("enter a number: \n");
                scanf("%d",&num);
               
               
                printf("enter another? \n");
                scanf(" %c",&choice);//modified here(space befor %c)
               
               
               
        }while (choice!='y'||choice!='Y');
       
        return 0;       
}

---

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i've modified your code.this will also work.