切换语句中的浮点数据类型 [英] Float Data Type in Switch Statement

问题描述

我正在为一个较大的程序创建一个函数，该函数将输入字母等级并将其存储在程序的其他位置的数组中，然后为该字母等级指定一个等级点(即A = 4.0，B = 3.0，等等)，稍后将在另一个函数中使用该函数，根据存储在另一个数组中的课程时间来计算总GPA.

I'm working on creating a function for a larger program that will take a letter grade that is entered and stored in an array elsewhere in the program and then assign a grade point to that letter grade (ie. A = 4.0, B = 3.0, etc.), which will later be used in another function to calculate total GPA based on course hours that have been stored in another array.

我之所以选择使用switch语句，是因为我在之前的编程中对它们很熟悉，但是我愿意采用一种更好的方法来完成此任务.我当前遇到的错误是"switch语句不完整".

I've chosen to use a switch statement because I'm familiar with them from previous programming I've done, but I'm open to a better method of accomplishing this task if possible. The current error I'm getting is "switch statement not integral".

float GradePoints(char grades[])
{
float points = 0.0;

switch (grades[])
{
case 'A':
    points = 4.0;
    break;

case 'B':
    points = 3.0;
    break;

case 'C':
    points = 2.0;
    break;

case 'D':
    points = 1.0;
    break;

case 'F':
    points = 0.0;
    break;
}

return points;
}

推荐答案

一次处理每个1年级.从以下位置更改函数原型:

Process each grade 1 at a time. Change your function prototype from:

float GradePoints(char grades[])

到

float GradePoints(char grade)

并将您的switch语句更改为 switch(grade).然后针对您的5个年级中的每一个，循环调用您的 GradePoints 函数.

and change your switch statement to switch(grade). Then call your GradePoints function in a loop for each of your 5 grades.

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