plllssss help me with this...**Citação:**

ooohhh sorry,here's the problem statementAccording to Einstein's famous equation,the amount of energy E produced when an amount of mass m is completely converted to energy if given by the formula

E is equal to mass which is m times the square of c,whre c is the speed of light...Write a program that will read in a mass in grams and output the amount of energy produced when the mass is converted to energy.The speed of the light is approximately 2.997925 times 10 to the power of 10cm/sec

if the mass is given in grams,then the formula yields the energy expressed in ergs.Use a constant declaration to name the speed of light.

thanksss...the speed of light can be expressed as 2.997925E10cm/sec...i really cant understand this problem statement,the output input and everything...