Find if a shell file exists
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Here is my C++ file:
#include <iostream>
#include <fstream>
#include <string>
using namespace std;
int main()
{
cout << "rentrez nom du shell\n";//give me the name of the shell
string shell("");//empty string
cin >> shell;
string path="/home/sylvain/";
string total=path+shell;
total='"'+path+shell+'"';
cout << total <<endl;// Ok jusque là
//ifstream monFlux(total);
ifstream monFlux("/home/sylvain/essai"); //On essaye d'ouvrir le fichier
if(monFlux) cout << "Ce fichier existe\n";
else cout << "fichier inexistant." << endl;
}
Impossible to replace (in the ifstream line) what is in the parenthesis by the string "total". What shall i do if I want that the above file works well , with a whatever shell file ? Many thanks for your answer. -
Why this line:
total='"'+path+shell+'"';?
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It does not make any sense to add " to a string containing a path - it will become invalid path! Because " is not allowed in paths.
If you want the path to be enclosed in " if you print it out then do:cout << '"' << total << '"' <<endl;This one I don't understand:
I cannot introduce introduce a string in the middle of a program line. Isnt'it ?What do you mean?
