Convert Binary to Decimal

binary-to-decimal.c

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
/**
* @desc Algorithm to convert binary to decimal number.
* 
* Compile: gcc binary-to-decimal.c -o toDecimal -lm
* Run: ./toDecimal 10100101
*
* @author Samuel T. C. Santos
*/


int main(int argc, char **argv){
	
	char* bits = argv[1];
	int i=0, j=0;
	//total of bits is equal to string length.
	int n = strlen(bits);
	int decimal = 0;
  
	j = n;
	for(i=0; i < n; i++){
		int bit = (int) bits[i] - 48;
		int term = bit * pow(2, --j);
		decimal += term;
		if(bit == 1) printf(" %d * 2 ^ %d = %d \n", bit, j,term);
	}

	printf("Binary:   %s \n", bits);
	printf("Decimal:  %d \n", decimal);
}