Question

2. Consider the following program written in C syntax:

void swap(int a, int b) {
   int temp;
   temp = a;
   a = b;
   b = temp;
}
void main() {
   int value = 2, list[5] = {1, 3, 5, 7, 9};
   swap(value, list[0]);
   swap(list[0], list[1]);
   swap(value, list[value]);
}

For each of the following parameter-passing methods, what are all of the values of the variables value and list after each of the three calls to swap?

a. Passed by value

b. Passed by reference

c. Passed by value- result

d. Passed by name

Answer 1