C :

#include<stdio.h> 


int main(){ 
	int n,i,j,z;
	scanf("%d",&n);
	//控制输出的行数 
	for(i = 1;i <= n;i++){
		//控制每行输出空格量 
		for(j = 0;j < i - 1;j++){
			printf(" "); 
		}
		//控住输出的*
		for(z=1;z <= n;z++){
			printf("*");
		} 
		//负责换行 
		printf("\n");
	}

} 

C++ :

#include <iostream>
using namespace std;

int main(){
    int i,n,j;
    cin>>n;
    for(i=1;i<=n;i++){
    	for(j=1;j<=i-1;j++){
    		cout<<" ";
		}
		for(j=1;j<=n;j++){
			cout<<"*";
		}
		cout<<endl;
	}
	
}

Pascal :

var a,i,j,k:longint;
begin
read(a);
for i:=1 to a do
begin
for j:=1 to i-1 do
write(' ');
for k:=1 to a do
write('*');
writeln;
end;
end.

Java :

import java.util.Scanner;

public class Main{
	public static void main(String[] args){
		Scanner scanner=new Scanner(System.in);
		int n=scanner.nextInt();
		for(int i=1;i<=n;i++){
			for(int j=1;j<=i-1;j++){
				System.out.print(" ");
			}
			for(int z=1;z<=n;z++){
				System.out.print("*");
			}
			System.out.println();
		}
	}
}

Python :

n= int(input())
for i in range (1, n + 1):
    for k in range (1,i):
        print(' ', end='')
    for j in range (1, n + 1):
        print('*', end = '')
    print();