C++ :

#include <iostream>
#include <cstdio>
using namespace std;
int main()
{
    cout<<"*"<<endl;
    cout<<"**"<<endl;
    cout<<"***"<<endl;
    cout<<"****"<<endl;
    cout<<"*****"<<endl;
    return 0;
}

Pascal :

begin
 writeln('*');
 writeln('**');
 writeln('***');
 writeln('****');
 writeln('*****');
end.