#define _CRT_SECURE_NO_WARNINGS

#include <stdio.h>

int main(void)

{

int i;

int years;

double rate, investment;


printf("원금 :");

scanf("%f", &investment);

printf("이율 :");

scanf("%f", &rate);



double total = investment;


while(total = investment * 2)

{

total = total * (1 + rate);

printf("%d년", years);

}


return 0;

}


응용이 안되네 ; 후달린다