#include "stdlib.h"
#include "iostream.h"

void rysuj(int i, int p = 1) {
     if(p <= i) {
     int a = 0;
         while(a < p) {
         cout << "x";
         ++a;
         }
     cout << endl;
     rysuj(i, ++p);     
     }
}

int main() {
rysuj(5);
system("pause");
}