Question

How to count the total zeros and ones in a binary number in C

Answer 1

#include <stdio.h>
 
#define INT_SIZE sizeof(int) * 8 
   
int main() {
    int number = 47079; // 1011011111100111
    int ones = 0, zeros = 0;
      
    for (int i = 0; i < INT_SIZE; i++) {
        if (number & 1) {
            ones++;
        }
        else {
            zeros++;
        }
 
        number >>= 1;
    }
   
    printf("%i\n%i", ones, zeros);
}
 
 
 
/*
run:
 
12
20
 
*/

 

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