先上程序

#include  <iostream>

using namespace std;

int main()

{

    int q = 0;

    char x[100] = { 0 };

    cin >> x;

    for (int i = 0; i < 100; i++)

    {

        if (x[i] == 0)

        {

             q = i;

             break;

        }

        if (a[i] == a)

        {

             a[i] = z;

        }

        if (a[i] == A)

        {

             a[i] = Z;

        }

        if (a[i] >= 98 && a[i] <= 122)

        {

             a[i] = a[i] - 1;

        }

        if (a[i] >= 66 && a[i] <= 90)

        {

             a[i] = a[i] - 1;

        }

    for (int j = 0; j < q + 1; j++)

    {

        cout << x[j];

    }

    return 0;

}

实现两个二维数组的乘法

说明：这个程序只能实现方阵相乘。

#include <iostream>

using namespace std;

int main()

{

    int m, n;

    cin >> m >> n;

    int a[100][100] = { 0 };

    for (int i = 0; i < m; i++)

    {

        for (int j = 0; j < n; j++)

             cin >> a[i][j];

    }

    int x, y;

    cin >> x >> y;

    int b[100][100] = { 0 };

    for (int i = 0; i < x; i++)

    {

        for (int j = 0; j < y; j++)

             cin >> b[i][j];

    }

    int c[100][100] = { 0 };

    for (int i = 0; i < m; i++)

    {

        for (int j = 0; j < y; j++)

        {

             int s = 0;

                 for (int p = 0; p < y; p++)

                 {

                     s += a[i][p] * b[p][j];

                 }

                 c[i][j] = s;

 

        }

    }

    for (int i = 0; i < m; i++)

    {

        for (int j = 0; j < y; j++)

        {

             cout << c[i][j] << " ";

        }

        cout << endl;

    }

}

 

 

拜~