题解 | #编写函数实现两数交换(指针方式)#
创建二维动态数组
http://www.nowcoder.com/practice/9e55995c4e5345878a31682e4048a0ed
int **ptr = new int *[n];
for(int i = 0; i<n;i++){
ptr[i] = new int [n];
}
for(int i =0;i<n;i++){
for(int j=0;j<n;j++){
ptr[i][j] = i+j;
}
}
for(int i =0;i<n;i++){
for(int j=0;j<n;j++){ cout<<ptr[i][j]<<" ";
} cout<<endl;
}
return 0;
}