#include<stdio.h>

void dilution_sequence(double initial_percent, double replacement_percent, int times, double* storage){
	storage[0] = initial_percent;
	for(int i = 1; i <= times; i++){
		storage[i] = storage[i-1] * ((100.0 - replacement_percent) / 100.0);
	}
}

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