不知道为什么没有输出i*j的结果

[user_csc]

#include<iostream.h>
#define COL 10
#define ROW 10
int **fun(int col,int row)
{
int **p = new int *[ROW];
int i,j;
for(i = 0; i < col; i ++)
for(j = 0; j < row; j ++)
{
p[i] = new int [COL];
p[i][j] = i*j;
}
return p;
}
void main()
{
int **p = fun(4,4);
for(int i = 0; i < 4; i ++)
for(int j = 0; j < 4; j++)
cout << p[i][j]<<"\t"<<endl;//I want cout i*j
}

[mmqmjy]

int **fun(int col,int row)
{
int **p = new int *[ROW];
int i,j;
for(i = 0; i < col; i ++)
{
p[i] = new int [row];
for(j = 0; j < row; j ++)
{
p[i][j] = i*j;
}
}
return p;
}

[taodm]

int **fun(int col,int row)
{
int **p = new int *[ROW];
p[i] = new int [COL];
看见col COL row ROW没有？

[beforefly]

#include<iostream.h>
#define COL 10
#define ROW 10
int **fun(int col,int row)
{
int **p = new int *[ROW];
int i,j;
for(i = 0; i < row; i ++)
{
p[i] = new int [COL];
for(j = 0; j < col; j ++)
{
//p[i] = new int [COL];
//每次都new当然就没有了，col和row的顺序要搞清楚
p[i][j] = i*j;
}
}
return p;
}
void main()
{
int **p = fun(4,4);
for(int i = 0; i < 4; i ++)
for(int j = 0; j < 4; j++)
cout << p[i][j]<<"\t"<<endl;//I want cout i*j
}

[beforefly]

其实既然你要用new，何必还要#define那两个常量？
直接new row*col大小就行了

[allen1981813]

最大问题是，LZ的内存没有释放！
fun的行列的植入顺序不对

[believefym]

楼主的代码好乱啊

#include<iostream>
using namespace std;

#define COL 10
#define ROW 10
int **fun(int row,int col)
{
int **p = new int *[row];
for (int i=0; i<row; i++)
{
p[i] = new int[col];
for (int j=0; j<col; j++)
{
p[i][j] = i*j;
}
}
return p;
}
void main()
{
int **p = fun(4,4);
for(int i = 0; i < 4; i ++)
{
for(int j = 0; j < 4; j++)
cout << p[i][j]<<"\t";//I want cout i*j
cout<<endl;
}

cin.get();
}