如何解决编译代码时不显示最后一个员工数据
我正在尝试获取最后一名员工 Bob Hu 的数据。但出于某种原因,它不想出现。有谁知道我做错了什么。?我尝试将计算/显示代码放入 function() 并在您当前计算/显示数据的位置以及 while() 终止后调用它。但我认为我做错了。请帮忙 这是我的代码。
#include <iostream>
#include <string>
#include <fstream>
using namespace std;
void find_pay(string x)
{
ifstream inputFile;
string filename;
// Get the filename from the user.
cout << "Enter the filename: ";
cin >> filename;
// Open the file.
inputFile.open(filename);
// If the file successfully opened,process it.
if(inputFile.is_open())
{
string data_record,prev,data_name,data_hour;
double total = 0;
while(getline(inputFile,data_record))
{
data_name = data_record.substr(0,30);
data_hour = data_record.substr(31,2);
if(prev.compare(data_name)!= 0 )
{
//Calculate the gross pay,tax,net pay
float gross_pay = 18 * total;
float tax = (12 * gross_pay)/100;
float net_pay = gross_pay - tax;
if(total!= 0)
cout << "Employee:" << prev << "\n" "Total Hours: " << total << " Gross Pay: $ " << gross_pay << " Tax " << tax << " Net Pay: " << net_pay << endl;
data_name = data_record.substr(0,30);
prev = data_name;
total = 0;
}
else if(prev.compare(data_name)==0)
{
total += stod(data_hour);
}
}
//close the file
inputFile.close();
}
}
int main()
{
string filename;
find_pay(filename); //call the void
return 0;
}
这是我得到的输出,你看到 Bob Hu 不见了
Enter the filename: /Users/normatacuri/Desktop/employeehours.txt
Employee:Jimmy Bucket
Total Hours: 26 Gross Pay: $ 468 Tax 56.16 Net Pay: 411.84
Employee:John Doe
Total Hours: 32 Gross Pay: $ 576 Tax 69.12 Net Pay: 506.88
Employee:Ann Doe
Total Hours: 20 Gross Pay: $ 360 Tax 43.2 Net Pay: 316.8
Employee:Mary Jones
Total Hours: 16 Gross Pay: $ 288 Tax 34.56 Net Pay: 253.44
Program ended with exit code: 0
这是我正在使用的文件上的数据..
Jimmy Bucket 8
Jimmy Bucket 9
Jimmy Bucket 10
Jimmy Bucket 7
John Doe 8
John Doe 8
John Doe 8
John Doe 8
John Doe 8
Ann Doe 5
Ann Doe 5
Ann Doe 5
Ann Doe 5
Ann Doe 5
Mary Jones 4
Mary Jones 4
Mary Jones 4
Mary Jones 4
Mary Jones 4
Bob Hu 8
Bob Hu 8
Bob Hu 8
Bob Hu 8
Bob Hu 8
解决方法
我尝试将计算/显示代码放入 function() 并在您当前计算/显示数据的位置以及 while() 终止后调用它。但我认为我做错了。
你是对的,你一定做错了,但是你处理这种情况的方法也在 while() 终止之后很好。由于你没有展示这个尝试,我不能说你做错了什么。但我可以向您展示另一种方法,其中 EOF 情况也在循环内处理 - 对于 while
循环的这种替换,只需重新排列几条语句。
for (; ; )
{ bool f = (bool)getline(inputFile,data_record);
if (!f || prev.compare(data_name = data_record.substr(0,30)) != 0)
{ // do this on EOF as well as new name
//Calculate the gross pay,tax,net pay
float gross_pay = 18 * total;
float tax = (12 * gross_pay)/100;
float net_pay = gross_pay - tax;
if (total != 0)
cout << "Employee:" << prev << "\n"
"Total Hours: " << total << " Gross Pay: $ " << gross_pay
<< " Tax " << tax << " Net Pay: " << net_pay << endl;
if (!f) break;
prev = data_name;
total = 0;
}
total += stod(data_hour = data_record.substr(31,2));
}
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