Scanf and printf in 'for' loop simple code is not working

Question

I am doing a game where user have to enter coordinates: F5, H8

For example.

I want to do this in a 'for' loop but it is working only for first time, further it is not working well. I'm looking for any advice.

    #include <stdio.h>
#include <stdlib.h>
int k,z,x;
char y;
int main()
{
    for(k=1;k<=10;k++)
    {
printf("Enter letter and digit\n");
    scanf("%c %d",&y,&x);
    printf("%c %d\n",y,x);
    }
    return 0;
}

Please edit your question and paste your code, so that others can copy your code (easily) to help you — Grantly, Dec 28 '17 at 15:55
`scanf` is hard to use in a case like this. If the user enters something wrong (for example, letters when you expected `%d`), `scanf` can never get past it. — Steve Summit, Dec 28 '17 at 15:56
Scanf only working for the first time in a loop, sounds like the favorite "newline stuck in input needs to be handled/ignored". — Yunnosch, Dec 28 '17 at 15:58

score 0 · Answer 1 · edited Dec 28 '17 at 16:07

Simple mod:

scanf(" %c %d",&y,&x);
       ^

What's that space? A space in scanf() format string consumes and discards all whitespaces if present. So spaces, tabs and newlines won't bother anymore.

From standard

A directive composed of white-space character(s) is executed by reading input up to the first non-white-space character (which remains unread), or until no more characters can be read. The directive never fails.

Scanf and printf in 'for' loop simple code is not working

1 Answers1