C :

#include<stdio.h>
int main()
{
	int n,m,i,j;
	scanf("%d%d",&n,&m);
	for(i=1;i<=n;i++)
	{
		for(j=1;j<i;j++)
		{
			printf(" ");
		}
		for(j=1;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<i;j++)
		{
			cout<<' ';
		}
		for(j=1;j<=m;j++)
		{
			cout<<'*';
		}
		cout<<endl;
	}
	return 0;
}

Pascal :

program acm;
var n,m,j,y,i:longint;
begin
 readln(n,m);
 for i:=1 to n do
  begin
   if i=1 then write('') else
   for y:=1 to i-1 do
    write(' ');
   for j:=1 to m-1 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();
            int step=n;
            for(int i=0;i<n;i++){
                for(int k=0;k<n-step;k++){
                    System.out.print(" ");
                }
                for(int j=0;j<m;j++){
                    System.out.print("*");
                }
                step--;
                System.out.println();
            }
        }
    }
}