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使用struct添加两个矩阵

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我正在尝试使用struct对两个矩阵求和,但它不起作用 .

如果这个代码可以优化,请告诉我:D

编译:

g++ -O2 -Wall program.cpp -o program

输出:

在/ usr / include / c /4.8/iostream:39:0中包含的文件中,来自Proy3.cpp:2:/ usr / include / c /4.8/ostream:548:5:注意:template std :: basic_ostream&std: :operator <<(std :: basic_ostream&,const unsigned char *)operator <<(basic_ostream&__ out,const unsigned char * __s)^ / usr / include / c /4.8/ostream:548:5:注意:模板参数推导/替换失败:Proy3.cpp:51:30:注意:'std :: istream '不是从'std :: basic_ostream'cin <<&M2.x [i] [j]派生的;

码:

# include < cstdio >
# include < iostream >


typedef struct Matrix
{
    int row, column;
            int x[20][20];
};

Matrix M1,M2;

使用命名空间std;

int main(){

cout << "Insert size rows: Mat[a]";
cin >> M1.row);

cout << "Insert size of columns Mat[a]";
cin >> M1.column;


cout << "Insert size of rows Mat[b]";
cin >> M2.row;

cout << "Insert size of columns Mat[b]";
cin >> M2.column;

int i, j;

   // Matrix x

    for(i = 0; i <= M1.row; i++)
{
        for(j = 0; j <= M1.column; j++)
        {
        cout << "Insert number for matrix X : \n";
        cin >> M1.x[i][j]
        }
}

       // Matrix y

    for(i = 0; i <= M2.row; i++)
{
        for(j = 0; j <= M2.column; j++)
        {
        cout << "Insert number for matrix Y : \n";
        cin << M2.x[i][j];
        }
}

// Matrix X + Matrix Y

for(i = 0; i <= M1.row; i++)
{
    for(j = 0; j < M1.column; j++)
    {
        cout <<"The sum of " << M1.x[i][j] << " + " <<  M2.x[i][j] << " = " << M1.x[i][j] +  M2.x[i][j] << endl;
    }
}
return 0;

}

2 回答

  • 0
    for(i = 0; i <= M2.M1.row; i++)
     {
        for(j = 0; j <= M2.M1.column; j++)
        {
        cout << "Insert number for matrix Y : \n";
        cin << &M2.M1.y[i][j];   
        }
      }
    

    您尝试访问的 M2.M1.y 没有元素 . 另外你为什么在 M2 内声明 M1 . 你可能只有一个结构,并有两个实例 . 像

    struct matrix
    {
        int row,column;
        int X[20][20];
    };
    struct matrix M1,M2;
    

    现在您可以输入两个矩阵 .

    此外,您必须使用 cin>>a 而不是 cin>>&a .

    也应该 cin << &M2.x[i][j];

    cin >> M2.x[i][j];
        ^^^^
    
  • 0

    我认为cin陈述应该是cin >>&M2.x [i] [j];而不是cin <<&M2.x [i] [j];

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