C :

#include <stdio.h>

void main(){
	int a[10][10]={0},i,j,n;
	scanf("%d",&n);

	for(i=0;i<n;i++){
		for(j=0;j<=i;j++){
			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++){
			printf("%d ",a[i][j]);
		}
		putchar('\n');
	}
}

C++ :

#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;
	}
}

Python :

def getList(m,n):
    ma=[[0 for i in range(n)] for i in range(m)]
    return ma
def printList(arr):
    for i in arr:
        for j in i:
            if j!=0:
                print(j,end=' ')
            else:
                print((''),end=' ')
        print()
n=int(input())
a=getList(n,n)
for i in range(0,n):
    for j in range(0,n):
        if i==j:
            a[i][j]=1
        elif i>j:
            a[i][j]=a[i-1][j]+a[i-1][j-1]
printList(a)