clc
//Given that
m = 4 // mass of substance consumed fully in kg
c = 3e8 // speed of light in m/s
// sample problem 5 page No. 223
printf("\n \n\n # Problem 5 # \n")
printf("\n Standard formula used \n E = m*c^2")
E = m * c^2// calculation of Amount of energy produced
printf ("\n Amount of energy produced is %e J.", E)