clc 
// Given that
E = 1400 // solar energy receives by the earth in W/square meter
d = 1.5e11 // distance between earth and the sun in meter
c = 3e8 // velocity of photon in meter/sec
// Sample Problem 40 on page no. 11.33
printf("\n # PROBLEM 40 # \n")
printf(" Standard formula used \n")
printf(" E = m*c^2 \n ")
E_ = 4 * %pi * d^2 * E
m = E_ / c^2
printf("\n Rate of decrement of mass of the sun is %e kg/sec.",m)