#include <stdio.h>
int main()
{
	int balance = 100;
	int target = 1000;
	float rate = 0.1;
	int year = 0;
	do {
		float interest = balance * rate;
		balance = balance + interest;
		year++;
	} while ( balance < target );
	printf("%d No. of years to achieve target balance.\n", year);
	return 0;
}