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这是我第一次来这里，我在编写程序时遇到了问题。我正在尝试获得每月付款和返还工资，根据工资和汽车付款的大小使用不同的打印报表。但是，我的输出没有正确输出。我收到 .2f 作为输出变量，而不是我想要的变量。有谁知道可能出了什么问题？

#include <stdio.h>
#include <math.h>



int main() {
    float cost;
    float interest;
    int years;
    float salary;
    float sal_twenty;
    float payment;
    float IM;
    float NumMon;

    printf("Enter annual income > ");
    scanf("%f", &salary);

    printf("Enter cost of car > ");
    scanf("%f", &cost);

    printf("Enter annual interest rate > ");
    scanf("%f", &interest);

    printf("Enter duration of loan in years > ");
    scanf("%d", &years);

    sal_twenty = salary * .2;
    IM = interest/12;
    NumMon=years*12;
    payment = cost * (IM * pow((IM + 1), NumMon))/(pow((IM + 1), NumMon) - 1);

    if (payment*12 > sal_twenty) {
        printf("A monthly payment of ");
        printf(".2f", payment);
        printf(" is too high given your annual income of ");
        printf(".2f", &salary);
    }

    if (payment*12 <= sal_twenty) {
        printf("Your annual income of ");
        printf(".2f", salary);
        printf(" allows a monthly payment of ");
        printf(".2f", payment);
    }

    return 0;
}
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2 回答 2

4

你忘记了%格式printf。IE

printf("%.2f", payment);

等等。（正如你正确地做的那样scanf）

于 2013-04-19T19:54:49.503 回答
2

在这printf(".2f", &salary);应该是

printf("%.2f", salary);

即&以前没有salary。

于 2013-04-19T19:56:24.510 回答