#include <iostream> using namespace std; int main(){ int i,n,j; cin>>n; //i循环控制输出n行 for(i = 1;i <= n;i++){ //j循环控制每行输出n个数 for(j = 1;j <= n;j++){ cout<<j; } cout<<endl; } } /************************************************************** Problem: 1363 User: admin Language: C++ Result: Accepted Time:10 ms Memory:2072 kb ****************************************************************/