Accelerated C++ Exercise 6-0 (分析成绩)

最新推荐文章于 2016-04-19 09:16:27 发布

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本文通过编程实现了一个系统，用于读取学生记录并分析哪些学生完成了所有家庭作业，哪些没有。系统提供了中位数、平均数和乐观中位数分析，并验证了学生作业完成情况的数据。最终通过命令行输出了分析结果。

#include <vector>   
#include <iostream>   
   
#include "analysis.h"   
#include "Student_info.h"   
   
using std::cin;   
using std::cout;   
using std::endl;   
using std::vector;   
   
int main()   
{   
    // students who did and didn't do all their homework   
    vector<Student_info> did, didnt;   
   
    // read the student records and partition them   
    Student_info student;   
    while (read(cin, student)) {   
        if (did_all_hw(student))   
            did.push_back(student);   
        else   
            didnt.push_back(student);   
    }   
   
    // verify that the analyses will show us something   
    if (did.empty()) {   
        cout << "No student did all the homework!" << endl;   
        return 1;   
    }   
    if (didnt.empty()) {   
        cout << "Every student did all the homework!" << endl;   
        return 1;   
    }   
   
   
    // do the analyses   
    write_analysis(cout, "median", median_analysis, did, didnt);   
    write_analysis(cout, "average", average_analysis, did, didnt);   
    write_analysis(cout, "median of homework turned in",optimistic_median_analysis, did, didnt);   
	system("pause");
    return 0;   
}