square_bitwise.c

//https://www.geeksforgeeks.org/calculate-square-of-a-number-without-using-and-pow/
//Calculate a number's square without using /, *, or pow().

#include <stdio.h>

int main(){


	int n;
	printf("Please enter an integer: ");
	scanf("%i", &n);

	unsigned int x = n;
	unsigned int r = 0;
	unsigned int i = 0;

	while(x){
		if(x & 1){
			r += (n << i);
		}

		x >>= 1;
		i++;
	}

	printf("n^2: %i", r);

	return 0;
}