#include <stdio.h>
void print_number(int n){
}
void print_star(int n){
print_number(n);
int j;
for(j= 0;j<n;j++)
print_star(j);
}
int main(void) {
int i;
for(i = 0; i < 5; i++)
print_star(i);
return 0;
}
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