Exercise 3: Write a C program in which you define a function that exchanges the contents of two given integers if they have the same sign (both negative or both positive), otherwise, it places the sum of the two in the first integer and their product in the second integer (Use passing by reference). Call this function in maino. Exercise 3: Write a C program in which you define a function that exchanges the contents of two given integers if they have the same sign (both negative or both positive), otherwise, it places the sum of the two in the first integer and their product in the second integer (Use passing by reference). Call this function in main()