我的类(class)有 4 个考试成绩。测试 1 - 测试 4。我想创建一个名为 mean 的函数,它将计算类(class)中每门考试的平均值并将其存储在 mean 数组中。但我似乎无法通过一个循环来完成此操作:
class Cstudent
{
public:
string firstName, lastName;
int test1, test2, test3, test4;
float average;
};
/* Here is the problem, the next time i go through the loop, i want to store the sum of
test2 in to sum[1] after already storing the total in to sum[0] for test 1 */
float mean(Cstudent section[], int n)
{
int sum[NUMBEROFEXAMS];
float mean[NUMBEROFEXAMS];
for(int i = 0; i < NUMBEROFEXAMS; i++)
for(int j = 0; j < n; j++){
sum[i] += section[j].test1;
}
}
最佳答案
将分数存储在数组中会更容易:
#include <array>
class Student
{
public:
string firstName, lastName;
std::array<int, 4> test;
float average;
};
然后你可以很容易地得到平均值:
#include <algorithm> // for std::accumulate
Student s = ....;
...
float avg = std::accumulate(s.test.begin(), s.test.end(), 1.0)/s.test.size();
关于c++ - 在一个函数中使用类的每个成员来计算平均值,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/18173596/