gistfile1.txt

#include <stdio.h>
#include <math.h>

double calcE(double m, double c) {
	double e;
	double c2;
	c2 = pow(c, 2);
	e = (m * c)/10;
	return e;
}

void printE(double m, double c) {
	double e = calcE(m, c);
	printf("The energy available from an object of mass %d is %d.2 PJ\n", 
			m, e);
	return ;
}

int main() {
	double c = 2.99792458;
	printE(1, c);
	printE(3.142, c);
	printE(10, c);
	printE(42, c);
}