7-7 I won't tell you (15 points)

7-7 I won't tell you (15 points) When you are doing your
homework, the little friend next to you asks you: "What is five times seven?" You should smile and tell him politely: "Fifty-three ." This question asks you to, for any pair of given positive integers, print their product backwards.

Input format:

Input gives two positive integers A and B up to 1000 on the first line, separated by spaces.
Output format:

Print the product of A and B backwards in one line.
Input sample:

5 7
Sample output:

53

#include <iostream>
using namespace std;

int main()
{
    
    
	int q[100], a, b, t = 0, flag = 1;
	cin>>a>>b;
	int tmp = a*b;
	while(tmp)
	{
    
    
		q[t++] = tmp%10;
		tmp /= 10;
	}
	for(int i = 0;i < t;i++)
	{
    
    
		if(q[i] == 0 && flag) continue; //注意去除前导零
		else flag = 0;
		cout<<q[i];
	}
	return 0;
}