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#include <stdlib.h>
#include <stdio.h>
 
int func(int num);
void print_int(int num);
void print_ln();
 
int main() {
	int i;
 
	for (i = 0; i < 10; i++) {
		print_int(func(i));
	}
 
	print_ln();
 
	return 0;
}
 
int func(int num) {
	return num * num;
}
 
void print_int(int num) {
	printf("%d", num);
}
 
void print_ln() {
	printf("\n");
}