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;
	}
}

Pascal :

var a:array[1..10,1..10] of longint;
    n,i,j:longint;
begin
read(n);
for i:=1 to n do
for j:=1 to i do
begin
a[i,1]:=1;
a[i,j]:=1;
end;
for i:=3 to n do
for j:=2 to i-1 do
a[i,j]:=a[i-1,j-1]+a[i-1,j];
for i:=1 to n do
begin
for j:=1 to i do
write(a[i,j],' ');
writeln;
end;
end.

Java :

import java.util.Scanner;
public class Main
{
	public static void main(String args[]){
		Scanner sc=new Scanner(System.in);
		int n=sc.nextInt();
		int[][] a=new int[n][n];
		for(int i=0;i<n;i++){
			for(int j=0;j<=i;j++){
				if(j==0){
					a[i][j]=1;
				}else if(i==j){
					a[i][j]=1;
				}else{
					a[i][j]=0;
				}
			}
		}
		for(int c=0;c<n/2+1;c++){
			for(int i=0;i<n;i++){
				for(int j=1;j<i;j++){
					a[i][j]=a[i-1][j]+a[i-1][j-1];
				}
			}
		}
		for(int i=0;i<n;i++){
			for(int j=0;j<n;j++){
				if(a[i][j]==0){
					System.out.print(' ');
				}else{
					System.out.print(a[i][j]+" ");
				}
			}
			System.out.println();
		}
	}
}

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)