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#include <iostream>
#include <iomanip>
#include <fstream>
#include <string>
using namespace std;
int main()
{
int selection; // menu choice made by user
string filename;
ifstream inFile;
ofstream outFile;
cout << endl << string(41,'*') << endl;
cout << string(9,'*') << " ";
cout << " File Compression Menu " << string (9,'*') << endl;
// option 0
cout << "0. Exit Program\n";
// option 1
cout << "1. Decompress File\n";
// option 2
cout << "2. Compress File\n";
// option 3
cout << "3. Future Use #1\n";
cout << string (41,'*') << endl;
//n main a loop is used to continually prompt
//the user to make a selection from the menu.
// The loop and the program terminate when the user enters in 0.
do
{
cout << "\nInput your selection: ";
cin >> selection;
cout << selection << endl;
if (selection < 0 || selection > 3)
{
cout << "Invalid selection made. Try Again\n";
}
} while(selection < 0 || selection > 3);
// error message for all non integer characters
if (cin.fail())
{
cin.clear();
cout << string(8,'*') << " Invalid Character Error " << string(8,'*');
cout << endl << "==> Invalid character entered.\n";
cout << "==> Please enter 0, 1, 2 or 3.\n";
cout << string(41,'*') << endl;
}
// if-then-else-if statements for processing choice made
if (selection == 0)
{
cout << "\nQuit selected. Terminating program now...\n";
exit(1);
}
else if (selection == 1)
{
cout << "\n==> Decompression of a file selected.\n\n";
cout << "Enter the name of the input file: ";
cin >> filename;
cout << filename << endl << endl;
inFile.open(filename.c_str());
if(!inFile)
{
cout << string(12, '*') << " ";
cout << " File Open Error " << string(12, '*') << endl;
cout << "==> Input file could not be opened.\n";
cout << "==> Decompression has been canceled...\n";
cout << string(41,'*') << endl;
inFile.clear();
return 1;
}
cout << "Enter the name of the output file: ";
cin >> filename;
cout << filename << endl << endl;
outFile.open(filename.c_str());
cout << "==> File has been succesfully decompressed." << endl;
}
else if (selection == 2)
{
cout << endl << string(41,'*') << endl;
cout << "==> Compression of a file selected.\n";
cout << "==> This option is currently unavailable\n";
cout << string(41,'*') << endl;
}
else if (selection == 3)
{
cout << string(41,'*') << endl;
cout << "==> No Action Performed\n";
cout << "==> This option has been seet aside\n";
cout << "==> for future actions\n";
cout << string(41,'*') << endl;
}
else
{
cout << "\n===> Logic error some where."
<< "Seleciton is an invalid value\n";
}
return 0;
}
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