class Solution {
public:
    string complexNumberMultiply(string num1, string num2) {
        string ans, stemp1, stemp2;
        if (num1[2] != '-' && num2[2] != '-')
        {
            int temp1 = num1[0] * num2[0] + (-1 * num1[2] * num2[2]);
            int temp2 = num1[0] * num2[2] + num1[2] * num2[0];
            stemp1 = to_string(temp1);
            stemp2 = to_string(temp2);
        }
        else
        {
            int temp1 = num1[0] * num2[0] + (-1 * num1[3] * num2[3]);
            int temp2 = (num1[0] * num2[3]) + (num1[3] * num2[0]);
            stemp1 = to_string(temp1);
            stemp2 = to_string(temp2);
        }
        ans += stemp1+ '+' + stemp2 + 'i';
        return ans;
    }
};

This is a code that I am writing for a leetcode problem. Problem No. 537. Complex Number Multiplication.

I tried my best to try different ways so that i get correct output of temp2, but all in vain.
I expect that it gives same multiplication answer just like the temp1 variable.
I know, am making some silly mistake here.

Kindly tell me what’s wrong with this ‘stemp2’ that it always gives 4802.