C:将两个 ScanF 相乘

Question

我有以下程序:

   #include <stdio.h>

 int main (void)
{
int n, number, employeeNumber,counter;
float wage,hours,grossPay;
grossPay = wage*hours;

    for ( counter = 1; counter <=5; ++counter) {

    printf ("Enter Clock#:");
    scanf ("%i",&number);
    printf ("Enter Wage:");
    scanf ("%f",&wage);
    printf ("Enter Hours:");
    scanf ("%f",&hours);

    employeeNumber = 0;

    for ( n = 1; n <= number; ++n)
        employeeNumber +=n;

    printf ("--------------------------------\n");
    printf ("Clock#    Wage    Hours    Gross\n");
    printf ("--------------------------------\n");
    printf ("%06i     %.02f      %.01f   %f\n\n", number, wage, hours,grossPay);
    }
    return 0;        
    }

当我运行该程序时，grossPay 目前为零。我希望 grossPay 等于 wage*hours，这取决于我输入的工资和小时数。谁能提供有关如何解决此问题的提示？谢谢!

Answer 1

移动这条线

grossPay = wage*hours;

之后

scanf ("%f",&hours);

您应该在用户输入wage 和hours 后尝试计算grossPay。默认情况下，在声明期间，wage 和 hours 将被初始化为默认值，即 0.0，因此您得到的 grossPay 为零.