help with scanf

[treyreese]

Suppose I wanted to input a seven digit binary number... how would i do it using scanf without having to put a space inbetween each digit

[iago]

you should use getchar().

or scanf("%c", &thischar); in a loop might work, I'm not entirely sure how %c works

[Eli_1]

I believe you could just do

Code Select Expand


#include <stdio.h>
#include <string.h>

int main() {
    char oooga[16];
    scanf("%s", oooga);

    if (strlen(oooga) != 7) {
         printf("I wanted 7 digits bastard!\n");
         return 1;
    }
    return 0;
}



[Edit] added \n

[iago]

I believe you could just do

Code Select Expand


#include <stdio.h>
#include <string.h>

int main() {
    char oooga[16];
    scanf("%s", oooga);

    if (strlen(oooga) != 7) {
         printf("I wanted 7 digits bastard!\n");
         return 1;
    }
    return 0;
}



[Edit] added \n

That can be overflowed and crash the program.  I would use fgets() instead.

[Eli_1]

of course it could, but I was trying to stick to his question on how to use scanf() to do it...

[Skywing]

Try %7s?

[Eli_1]

I didn't know you could do that... thanks, sky