Thread: Probably simple mistake (newbie)

Hi,

I just started with C like 1 week ago and Ive never coded in my life so bear with me as I always try to code stuff from the top of my head that Ive already learned so its really just a very simple code ...

Code:

#include<stdio.h>

int main(void)
{

  char c;

  //ask user

  while (!(c == 'y' || c == 'Y' || c == 'n' || c == 'N')) {
    printf("Do you agree?: ");
    scanf("%c", &c);

    if (c == 'y' || c == 'Y')
      printf("I agree\n");

    else if(c == 'n' || c == 'N')
        printf("I disagree\n");
  }

}

The purpose of this code is to ask the user if he "Agrees" and if he types in anything else than "Y/y or N/n" it asks the user again in a loop.

Now the problem is that if you enter any other charakter than "Y/y /N/n" it always prints "Do you agree?: " twice in a row and I cant figure out why.

Thanks in advance.