Event and Count Controlled Loops in C

#include <stdio.h>

int main() {
	
	float invest = 1000;
	int num_years = 0;
	
	while(invest < 2000) {
		invest = invest + (invest * 0.05);
		printf("Investment = %0.2f\n", invest);
		num_years++;
	}
	
	printf("\nIt took %d years for 1000 to double\n", num_years);
	
	///////////////////////////////////////////////////////
	
	float invest_2 = 5000;
	int i;
	
	for (i = 0; i < 5; i++) {
		invest_2 = invest_2 + (invest_2 * 0.10);
	}
	
	printf("\n5000 turned into %0.2f in 5 years\n", invest_2);
	
	return 0;
}