一只题解

#include<iostream>
using namespace std;
int main(){
    int n;
    cin>>n;
    int s[n+5][n+5];
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            if(j==0||j==i)s[i][j]=1;
            else if(j>i)s[i][j]=0;
            else s[i][j]=s[i-1][j-1]+s[i-1][j];
        } 
    }
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            if(s[i][j]==0)break;
            else cout<<s[i][j]<<" ";
        } 
        cout<<endl;
    }
}