矩阵乘法能运行,但没有结果~

#include<iostream>
#define MAX_SIZE 10
using namespace std
int main()
{
    int i = 0, j = 0, s = 0, q = 0, NumOfColA, NumOfRowA, NumOfColB;
    int a[MAX_SIZE][MAX_SIZE], b[MAX_SIZE][MAX_SIZE], c[MAX_SIZE][MAX_SIZE];
    cout << "输入的行列数均不能大于10!" << endl;
    cout << "请输入A矩阵相关信息：" << endl;
    cout << "行 NumOfRowA = ";
    cin >> NumOfRowA;
    cout << "列 NumOfColA = ";
    cin >> NumOfColA;
    //矩阵A的行对应矩阵B的列
    cout << "请输入B矩阵相关信息：" << endl;
    cout << "列 NumOfColB = ";
    cin >> NumOfColB;


    cout << "请输入矩阵A元素" << endl;
    for (i = 0; i < NumOfRowA; i++)
    {
        for (j = 0; j < NumOfColA; j++)
        {
            cin >> a[i][j];
        }
    }

    cout << "请输入矩阵B元素" << endl;
    for (j = 0; j < NumOfColA; j++)
    {
        for (s = 0; s < NumOfColB; s++)
        {
            cin >> b[j][s];
        }
    }

    for (i = 0; i < NumOfRowA; i++)
    {
        for (s = 0; s < NumOfColB; s++)
        {
            for (j = 0; j < NumOfColA; j++)
            {
                q = q + a[i][j] * b[j][s];
            }
            q = 0;
            c[i][s] = q;
        }
    }
    cout << "矩阵乘法的结果：" << endl;
    //输出矩阵结果
    for (i = 0; i < NumOfRowA; i++)
    {
        for (j = 0; j < NumOfColB; j++)
        {
            cout << c[i][j] << "\t";
        }
        cout << endl;
    }
    system("pause");
    return 0;
}