In C programming

Problem 9 5.2. Write a program that prompts the user for two integers and one of the letter codes a, s, m, or d. The interpretation is given by the following table: Letter Meaning add subtract multiply divide The function main issues the prompt and stores the user's input in the variables num1, num2, and operator. Then main checks the letter code. If the letter code is a, main invokes the function add with arguments num1 and num2 and similarly for s, m, and d. Each of the functions add, subtract, multiply, and divide invokes the function print result, which prints the result of the arithmetic operation