利率计划

Question

我刚刚开始学习C.所以对于练习我决定写一个利率计算器，但由于某种原因，我的计算总是为0，我无法弄明白。如果你能看一下。

#include <stdio.h>


main()
{


int time;
float principle, rate, total;

printf("What is your starting amount? ");
scanf(" %f", &principle);
printf("What is your interest rate? ");
scanf(" %f", &rate);
printf("How long do you want to save? ");
scanf(" %d", &time);

total = principle * rate * time;
printf("You will have earned an interest amount of $%d", total);
return 0;
}

Answer 1

printf("You will have earned an interest amount of $%d", total);

由于total是浮点数，%d应为%f。此外，在每一行的末尾抛出一个新行是一个不错的选择。

printf("You will have earned an interest amount of $%f\n", total);