C :

#include<stdio.h> 
int main()
{
	int a[101],b,n,m,tag;
	while(scanf("%d%d",&n,&m)!=EOF)
	{
		for(int i=n-1;i>=0;i--)
		
		{
			printf("%*s",i,"") ;
			for(int j=0;j<m;j++)
			printf("*");
			printf("\n");
		} 

	}
	return 0;
}

C++ :

#include <iostream>
using namespace std;
int main()
{
	int n,m,i,j;
	cin>>n>>m;
	for(i=1;i<=n;i++)
	{
		for(j=1;j<=n-i;j++)
		{
			cout<<' ';
		}
		for(j=1;j<=m;j++)
		{
			cout<<'*';
		}
		cout<<endl;
	}
	return 0;
}

Pascal :

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

Java :

import java.util.Scanner;
public class Main{
    public static void main(String[] args){
        Scanner in=new Scanner(System.in);
        while(in.hasNext()){
            int n=in.nextInt();
            int m=in.nextInt();
            for(int i=0;i<n;i++){
                for(int k=1;k<n-i;k++){
                    System.out.print(" ");
                }
                for(int j=0;j<m;j++){
                    System.out.print("*");
                }
                System.out.println();
            }
        }
    }
}