第四周 任务四扩展二

/*任务 4 扩充 2（选做）：手工输入工资？！太让人不能忍受了。现给出包含了 500 个职工工资的文件salary.txt，从文件中读数据，完成上面的工作。此任务可参照上一学期第 15 周任务 3 完成。还可以将排序后结果保存到一个文件中。*/#include<iostream>#include <fstream> using namespace std;class Salary{public:void cin_salay();//得到工资void cout_salay();//输出工资void bubble_sort();//排序void add_salary(double money);//加工资private:double salary[500];int number;};int main(){Salary  Sal;Sal.cin_salay();cout << "原工资是：";cout << endl;Sal.cout_salay();cout << endl;Sal.add_salary(100);Sal.bubble_sort();cout << "涨完工资后是：";cout << endl;Sal.cout_salay();cout << endl;return 0;}void Salary :: cin_salay()//得到工资{     int i; number = 500;    ifstream infile("salary.txt", ios::in);      if(!infile)  {  cerr << "open error!" << endl;          exit(1);  }      for(i = 0; i < number; i++)  {  infile >> salary[i];    }      infile.close();      cout<<endl;   }void Salary :: cout_salay()//保存工资{ int i; for(i = 0; i <= number - 1; i++)   {   cout << salary[i] << '\t';           if((i + 1) % 10 == 0) cout << endl;   }          cout<<endl;  }void Salary :: bubble_sort()//排序{int i, j, k;      double t;      for(i = 0; i < number - 1; i++)  {  k = i;          for(j = i + 1; j < number; j++)  if(salary[j] > salary[k]) k = j;              t = salary[k];              salary[k] = salary[i];              salary[i] = t;  }  }void Salary :: add_salary(double money)//加工资{int i;      for(i = 0; i < number; i++)  {  salary[i] = salary[i] + money;  }  }