3rd week Item 5-Array as data member (4)

*   Copyright (c) 2015, Yantai University School of Computer   * All rights reserved.   * File name: Test.cpp   *:    Liu Chang    * completion date: March 22, 2015   * version number: v1.0   *  * Problem Description: Read the textbook P255 Example 8.4, notice that a data member in a class can be an array 。 Design a Payroll class (Salary), where the data members of the class are as follows:     class Salary     {     private:         double salarys[50];//multi-person wage         int number ;  Actual number     };     The member functions to be designed are:     void Set_salarys (): Enter the employee's salary (input-1 marks the end of the payroll input), the wages are saved to the salary array, the actual number is saved to the numbers;     void Add_salarys ( int x): Give everyone a raise x yuan pay     void Sort_salarys (): Sort the payroll     void Show_salarys (): Show payroll information (4) Add a member function to save the sorted result to a file. * Input Description: NULL; * Program output: Output as required.

The code is as follows:

#include <iostream> #include <fstream> #include <cstdlib>using namespace Std;class salary{public:             void Set_salarys ();    Enter the employee's salary (input-1 is the end of the payroll input), and the payroll is saved to the salary array, and the actual number is saved in the numbers.         void Add_salarys (int x);            Give everyone a raise x yuan pay void Sort_salarys ();            Sort of the Payroll void Show_salarys ();            Show payroll information void Save_salarys ();              Store payroll information private:double salarys[500];                       Multi-person salary int number;    Actual number};int Main () {Salary s;    int x;    S.set_salarys ();    S.show_salarys ();    cout<< "Please enter the amount of salary to be increased:";    cin>>x;    S.add_salarys (x);    S.sort_salarys ();    S.save_salarys (); return 0;}    void Salary::set_salarys () {int i=0;    Ifstream infile ("Salarys.txt", ios::in); if (!infile) {cerr<< "Open error!"        <<endl;    Exit (1);    } while (Infile>>salarys[i]) {i++;    } number=i; Infile.close ();}    void Salary::add_salarys (int x) {int i; For(i=0;i<number;i++) salarys[i]+=x;}    void Salary::sort_salarys () {int i,j;    Double T; for (i=0;i<number-1;i++) for (j=0;j<number-i-1;j++) if (salarys[j]<salarys[j+1])//from high to low row                column {t=salarys[j];                SALARYS[J]=SALARYS[J+1];            salarys[j+1]=t;    }}void Salary::show_salarys () {int i;        for (i=0;i<number;i++) cout<<salarys[i]<<endl; Cout<<endl;}    void Salary::save_salarys () {int i;   Ofstream outfile ("Salary_data.txt", ios::out); Open file as input if (!outfile)//test successfully opened {cerr<< "open error!"        <<endl;    Exit (1);    } for (i=0; i<number; ++i) {outfile<<salarys[i]<<endl; } outfile.close ();}

Operation Result:

3rd week Item 5-Array as data member (4)