Write a c++ program that will create an array of four integers. it will allow the user to enter in four valid scores and store them in the array. ( valid range is 0 - 100) it will compute the letter grade based upon the four scores, namely, a = 90 - 100, b= 80- 89, c = 70-79, d = 60-69, otherwise f. it will display the scores and letter grade to the screen.

Asteam is contained in a rigid tank with a volume of 1 m3. initially, the pressure and temperature are 7 bar and 500 oc, respectively. the temperature drops due to cooling process. determine: (1) the temperature at which condensation begins in °c, (2) the fraction of the total mass that has condensed when the pressure decreased to 0.5 bar. (3) the volume in m3 occupied by saturated liquid at the final state?