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Parse problems

Started by demonrealms Aug 14, 2003 at 1:02 PM 1 reply 250+ views

Original Post

Aug 14, 2003 at 1:02 PM

How do I get my program to delete certain symbols frfom a char? This is my file:

#include <iostream>
#include <fstream>
#include <string>
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <tchar.h>
using namespace std;

int main(void)
{
	char file2[80];
	cout << "File name: ";
	cin.getline(file2, 80, "*");
	cout << file2 << endl;
	return(0);
}

Any idea''s? Thanks in advance, demonrelams

antareus

Aug 14, 2003 at 1:43 PM

Loop over the array elements:


for(int i=0; i < sizeof file2; i++)
{
 if(file2[i] == '\\')
  file2[i] = ' '; //replace \ with space

}

[edited by - antareus on August 14, 2003 2:46:30 PM]

Lektrix

Aug 14, 2003 at 5:17 PM

antareus: He said 'delete', not replace. Incidentally, it would be advisable to use strlen(), so as only to examine the elements that make up the null-terminated string.

demonrealms: Since you are using C++, you really should be using std::string instead of C-style strings. Here is how simple the code would be for your particular program, if say you wanted to erase all occurrences of '/':


#include <fstream>
#include <string>
#include <algorithm>
 
int main()
{
    std::cout << "File name: ";
    std::string file_name;
    std::getline( std::cin, file_name, '*' );
 
    file_name.erase( std::remove( file_name.begin(), file_name.end(), '/' ),
                     file_name.end() );
 
    std::cout << file_name << std::endl;
 
    return 0;
}

Or if you meant erase a range of characters, here is an example, in which all the characters before, and including, the last forward-slash ('/') are erased:


#include <fstream>
#include <string>
 
int main()
{
    std::cout << "File name: ";
    std::string file_name;
    std::getline( std::cin, file_name, '*' );
 
    file_name.erase( file_name.begin(),
                     file_name.begin() + file_name.find_last_of('/') + 1 );
 
    std::cout << file_name << std::endl;
 
    return 0;
}

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[edited by - Lektrix on August 14, 2003 6:21:18 PM]

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