An investment firm xyz has a monthly income scheme that gives a 6.6% annual interest on the money invested. Create an interest calculator in C language in which the user can enter the principle amount...

Extracted text: An investment firm xyz has a monthly income scheme that gives a 6.6% annual interest on the money invested. Create an interest calculator in C language in which the user can enter the principle amount and the program prints the monthly interest that the user will get every month.