In program1.c, write the function int foo(int* a, int *b, int c) that is supposed to do the following: increment a decrement b assign (a - b) to c return the value of c. in the main function, declare three integers x, y, z, and assign to them random integer values in the interval [0,10], using print the values of x, y, z. call foo() by appropriately passing x, y, z, as arguments. print out the values of x, y, z, after as well as the value returned by