错误:控制到达非无效功能的末尾.找不到修复错误的位置

我找不到错误，错误位于函数（计算查找计算）中。

这就是代码似乎有问题的地方。

开始

calculation findCalculations(float A[][5], int rows) {
    {
        double sum = 0;
        for (int x = 0; x < rows; x++) {
            cout << endl;
            for (int y = 0; y < 5; y++) {
                sum = sum + A[x][y];
            }
        }
        cout << "Average graylevel: " << sum << endl;
        double min = 0;
        for (int x = 0; x < rows; x++) {
            for (int y = 0; y < 5; y++) {
                if (A[x][y] < min) {
                    min = A[x][y];
                }
            }
        }
        cout << "Min graylevel: " << min << endl;
        int graylevel = 0;
        for (int x = 0; x < rows; x++) {
            for (int y = 0; y < 5; y++) {
                if (A[x][y] >= .75) {
                    graylevel = A[x][y];
                }
            }
            cout << "Number of bright pixels: " << graylevel << endl;
        }
        bool bright = true;
        bool dark = false;
        for (int x = 0; x < rows; x++) {
            for (int y = 0; y < 5; y++) {
                if (A[x][y] < .5) {
                    bright = A[x][y];
                }
                if (A[x][y] >= .5) {
                    dark = A[x][y];
                }
            }
            if (dark < bright) {
                cout << "Image has more bright pixels: yes" << endl;
            } else if (dark == bright) {
                cout << "Image has more bright pixels: they have the same" << endl;
            } else {
                cout << "Image has more bright pixels: no" << endl;
            }
        }
    }
}

停

如果有人可以帮助我找出出了什么问题，那将意味着非常感谢。