Scanf doesn't appear to work in debug mode in Eclipse CDT with GDB

Question

When running this code in debug mode:

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

int main()
{
    int a, b, c;
    scanf("%d%d%d", &a, &b, &c);
    printf("Values entered: %d %d %d\n", a, b, c);
    return EXIT_SUCCESS;
}

The program would not request any user input and would just output:

Values entered: 18 78 2130026496

Answer 1

I had the same problem. Figured out that you have to clear output buffer if a newline character is used or if an input function is used. So, do this way..

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

int main()
{
    int a, b, c;
    fflush(stdout);//Clears the stdout buffer
    scanf("%d%d%d", &a, &b, &c);
    printf("Values entered: %d %d %d\n", a, b, c);
    return EXIT_SUCCESS;
}