#include<stdio.h>

double* dilution_sequence(double initial_percent, double replacement_percent, int times){
	double percent_remaining[times + 1] = {initial_percent};
	for(int i = 1; i <= times; i++){
		percent_remaining[i] = percent_remaining[i-1] * ((100.0 - replacement_percent) / 100.0);
	}
	double *returnthis = percent_remaining;
	return returnthis;
}

int main(){
	double *dilutions = dilution_sequence(50, 90, 5);
	double new_space[6];
	for(int i = 0; i < 6; i++)
		new_space[i] = dilutions[i];
	for(int i = 0; i <= 5; i++){
		printf("After %d rocks, we have %lf percent antifreeze\n", i, new_space[i]);
	}
	return 0;
}