#include <bits/stdc++.h> using namespace std; int main(){ int a[10][10] = {0}; int n,i,j,s; cin>>n; a[0][0] = 1;//第1行第1个数先赋值 for(i = 1;i < n;i++){ //第i行有i个数 for(j = 0;j <= i;j++){ //第i行第一个数是1 if(j == 0){ a[i][j] = 1; }else{ a[i][j] = a[i - 1][j] + a[i - 1][j - 1]; } } } for(i = 0;i < n;i++){ for(j = 0;j <= i;j++){ cout<<a[i][j]<<" "; } cout<<endl; } } /************************************************************** Problem: 1275 User: admin Language: C++ Result: Accepted Time:11 ms Memory:2072 kb ****************************************************************/