C/C++ :: Reversing Array Contents

I'm trying to reverse 25 items that are in my array by using a For Loop and sending 2 of the numbers to a function at a time. The code I have right here, is not working at the moment, I cannot find the problem because i've been staring at my code for too long.

int farEnd = 24;
for (int i = 0; i < 24; i++){
Swap(intArray[i], intArray[farEnd]);
farEnd--;
}

Also here is the code in my function

void Swap(int num1, int num2){
int temp = 0;

temp = num1;
num1 = num2;
num2 = temp;
}