Having trouble with my sorting function

First let me show my code.

void findRev(Items* products[], int numOfProd) {

for (int i = 0; i < (numOfProd - 1); i++) {
    double rev1 = products[i]->price * products[i]->numSold;
    double rev2 = products[i + 1]->price * products[i + 1]->numSold;

    if (rev1 > rev2) {
        Items* temp = products[i];
        Items* temp2 = products[i + 1];
        temp2 = products[i];
        temp = products[i + 1];
    }
}
}

I have a struct of different items. I'm trying to sort them by revenue, but i have to find the revenue first. I know i can just add a revenue field to my struct, but my professor said we're not allowed to do that. I wrote this function, but it doesn't work the way i wanted it to. Anyway i can make it work?