Question

How to display the bits of an integer in C

Answer 1

#include <stdio.h>

void show_bits(int n, int size) {
    for (int i = 1 << (size - 1); i > 0; i = i / 2)
        (n & i) ? printf("1") : printf("0");
}

int main(void)
{
    show_bits(12, 4);
    printf("\n");

    show_bits(7, 4);
    printf("\n");

    show_bits(56, 8);

    return 0;
}




/*
run:

1100
0111
00111000

*/

 

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