Question

How to divide a number by 2 using binary shift right operation in C

Answer 1

#include <stdio.h>

void print_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)
{
    int n = 14;
    
    printf("n = %d\n", n);
    print_bits(n, 4);
    printf("\n");

    n = n >> 1; // divide the number by 2 
    printf("n = %d\n", n);
    print_bits(n, 4);

    return 0;
}




/*
run:

n = 14
1110
n = 7
0111

*/

 

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