Question

我是计算机科学专业的一年级学生，目前正在学习编程。我们正在学习C编程语言，我无法弄清楚如何在代码末尾正确输入循环，以询问用户是否要继续。

这个简单的任务要求开发一个程序来确定员工的总薪酬（包括确定加班的“if”陈述）。正如您在我的代码中看到的那样，我认为我已经正确完成了。该任务继续指出，在我的程序结束时，我应该使用循环来询问用户是否要继续。

在课堂上，我们讨论了For循环和While循环，但我对如何正确实现此功能感到有点迷失。

我最初尝试做类似的事情......

printf("Would you like to continue? (1 = Yes, 2 = No) \n" );
scanf("%i", _____ ); While (_____ == 'y' || ______ == 'Y') {
}

但不确定要为输入（scanf）声明什么或者在while循环中放入什么。请帮忙。我的春假和没有校园辅导就在附近。谢谢！

这是我的代码：

#include <stdio.h>
#include <stdlib.h>

int main () {
    double totalHours, rate, grossPay, overTime, overTimepay, otHours, grossPaywithOT;

    //1. I began by asking user for total hours & getting input
    printf("Enter your total hours worked : \n");
    scanf("%lf", &totalHours);

    //Now I'm using a selection statement to determine pay for overtime hours
    if (totalHours > 40) {
        //a. Inform user they have overtime hours
        printf("You worked over 40 hours this period. \n");

        //b. Ask how many hours over 40 they worked
        printf("How many hours over 40 did you work? : \n");
        scanf("%lf", &otHours);

        //c. Ask the user for hourly rate
        printf("What is your hourly rate? : \n");
        scanf("%lf", &rate);

        //d. Overtime Rate Calculation & Gross Pay Calculation
        grossPay = totalHours * rate;
        overTime = 1.5 * rate;
        overTimepay = otHours * overTime;
        grossPaywithOT = overTimepay + grossPay;

        //e. Display overtime pay and Gross Pay
        printf("Your overtime pay is %.02lf \n", overTimepay);
        printf("Your total Gross Pay including overtime is %.02lf \n", grossPaywithOT);
    } else {
        //2. Ask the user for hourly rate
        printf("What is your hourly rate? : \n");

        //3. User input for hourly rate
        scanf("%lf", &rate);

        //4. Gross Pay Calculation
        grossPay = totalHours * rate;

        //5. Display grossPay
        printf("Your Gross Pay is %.02lf \n", grossPay);
    }
}

Answer 1

我会：

Integer.compare(p1.getAge(), p2.getAge()) // java 7+

/ A

Answer 2

do
{
    // loop until they decide to stop

    // put the code to do your normal stuff here

    int i = 0;
    do
    {
        // loop until they input a 1 or 2
        printf("\nWould you like to continue? (1 = Yes, 2 = No) \n" );
        scanf("%i", &i);
    } while ((i != 1) && (i != 2));

} while (i == 1);

Answer 3

scanf()不会写入变量，而是写入内存地址。因此，在_____代码中，您应该编写一个指向内存地址的指针。几个例子：

int * intPointer;
scanf("%i", intPointer);

或者：

int integer;
scanf("%i", &integer);

请注意，您在格式化字符串中键入了"%i"。 %i告诉scanf()用户输入的字符串应该被解析为整数。你想把它作为一个角色来阅读。 C格式化函数（scanf()中的最终 f 表示对字符使用%c。

在C编程中，如何使用循环询问用户是否要继续？

3 个答案: