aswer should be in c+

Write a program to enter a number from the keyboard, and If the entered number is positive, calculate the total surface area of a cone. n Else, calculate the lateral surface area of a cone. Note- Total surface area =nr(r +1), Lateral surface area= url. (All the inputs should be entered from keyboard). (4 Marks) (2 Marks) ii) Draw the flowchart for the whole program. CO 7 A B