Language to program in is C

For Problem 1.20, show two stack configurations: one before your first call to swap3, and one just before returning from the first call. Exercise 1.20. Write a function that swaps the values of three int variables. It should have the following prototype: 1 void swap3 (int *a, int *b, int * c); For example, calling swap3(&x, &y, &z) should result in z's having y's orig- inal value, y's having x's original value, and x's having z's original value. Use assertions to protect the function. Write a unit test of swap3 in a main func- tion. Illustrate various interesting memory configurations during its execution. How can swap3 be called in order to swap the values of two variables rather than three, given that three arguments must be passed