Question

C++ 如何用new创建m*n维动态数组,m和n在程序运行时通过cin>>m>>n输入

Answer 1

int **pp;
int m, n;

cin >> m >> n;

pp = new int*[m];
for(int i=0; i<m; ++i)
pp[i] = new int[n];

Answer 2

int **CreateArray()
{
int m,n;
cout<<"请输入维数"<<endl;
cin>>m>>n;

//分配内存
int **p = new int* [m];
for(int i = 0 ; i < m ; i++)
{
p[i] = new int[n];
}

//初始化并输出
for(int k = 0 ; k < m; k++)
{
for(int j = 0 ; j < n ; j++)
{
p[k][j] = k + j;
cout<<p[k][j]<<endl;
}
}
return p;
}