converting char to string

**deleeuw** · 09-23-2003

Hey all,
I'm stumped! How do I convert
char X to std::string sob (see below)?

Code:

#include <iostream.h>
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <string.h>
#include <fstream.h>

main(){
FILE *OB2;
char x[5];
cin>>x[5];
obCheck:
std::fstream OB;
OB.open("./oob", std::ios::in);
std::string sob(x);
while (!OB.eof()){
cout<<sob<<endl;
std::getline(OB, sob);
}
OB.close();
cout<<sob<<endl;
if (x=sob){
cout<<"Unit name already used. Please enter another name"<<endl;
cin>>x;
goto obCheck;
}

else{
}
}

THX

**alpha** · 09-23-2003

first of all, take the .h off from the headers.

Code:

cin >> x[5];

should be

Code:

std::cin >> x;

Are you trying to compare x and sob?

**deleeuw** · 09-23-2003

yes,
I'm trying to compare x to sob.

Thx`

**myjay** · 09-23-2003

Code:

if (x=sob){

... what are you trying to do? are you trying to compare them? or are you assigning sob to x?

from your use of the if statement i'd say your comparing them... in this case it should be if(x==sob) and i would declare x as a string or a pointer to a char so..

string x = "whatever";
or
char *y = "whatever";

cout<<x; and cout<<y; will both print "whatever" i dunno if that helps, caues i'm confused about what your doing exactly.

**alpha** · 09-23-2003

Since x is a c-string, and sob is a std::string, you could compare them as such:

Code:

if(strcmp(x, sob.c_str()) == 0) {
  // do stuff
}

**deleeuw** · 09-23-2003

OK--Stupid Question:
what is a "c_string"?

**lyx** · 09-23-2003

A C string is but a simple null-terminated string, a array of characters terminated with the character null (the one with integer-value 0). In C++, most people use the string class of the standard library. (but I don't...)

**deleeuw** · 09-24-2003

Hey all,
Thanks for everyone's help.
I finally got the thing working:
it reads and appends the list fine.

Thanks again!

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