trying to print a line from a text file
I've got an apparent logic problem that I can't seem to solve. This program should open a text file and search for a terminal and then print the entire line.
It does not work as it should and I can't seem to figure out why.
Code:
/***********************************
* Pre-Compiler Directives *
***********************************/
#include <iostream>
#include <fstream>
#include <sstream>
#include <cassert>
#include <string>
using namespace std;
/***********************************
* Global Variables *
***********************************/
int terminalNumber;
string inputFileName = "terminals.txt"; // input file name
string lineOfText;
string stringTerminal;
ifstream inStream;
string number;
string output;
string input;
/***********************************
* Main *
***********************************/
int main()
{
cout << "This program takes a terminal number\n"
"and prints out the terminal associated\n"
"with that number.\n"
"Enter a terminal to retrieve 1-99 or 0 to quit --> ";
cin >> terminalNumber;
stringstream str;
str << "terminal" << terminalNumber << endl;
string stringTerminal = str.str(); // The final string combined
for(;;)
{
if (terminalNumber <= 0) break;
inStream.open(inputFileName.data()); // opens the file to read from
assert( inStream.is_open() );
for (;;)
{
inStream >> input;
if (input == stringTerminal) break;
getline(inStream, lineOfText);
output = lineOfText;
}
if( inStream.eof() ) break;
}
cout << "Your terminal information is:\n" << output << endl;
cout << "Enter another terminal number 1-100 or 0 to quit: ";
cin >> terminalNumber;
}
inStream.close(); // closes the file
// OUTPUT
cout << "No more terminals for you!\n"
"Have a good day";
cin.ignore();
return 0;
}
sample text file called terminals.txt:
Code:
terminal1 4100 100 a 06012006
terminal2 4101 100 a 06012006
terminal3 4102 100 a 06012006
terminal4 4103 100 a 06012006
terminal5 4104 100 a 06012006
terminal99 4107 100 a 06102006
it prints out the last terminal - the "terminal 99" and loops. Any ideas?
