Problem with std::basic_istr eam<_Elem,_Trai ts> &std::getlin e()

[Bit Byter]

I have a method in a class implemented like this:

int foo (const char* filename, bool flg)
{
FILE *fp;
char *buffer, *tokstr, *tmp;
size_t size, toksize;
unsigned int i;

if ((fp = fopen(filename, "r")) == NULL)
return FILE_READ_ERROR ;

if (flg) {
buffer = NULL;

if (getline(&buffe r, &size, fp) == -1) { // <- COMPILER BARFS HERE
!
......
}
}
}
Error message I'm getting is this:

myfile.cpp(1033 ): error C2780: 'std::basic_ist ream<_Elem,_Tra its>
&std::getline(s td::basic_istre am<_Elem,_Trait s>
&,std::basic_st ring<_Elem,_Tra its,_Alloc> &)' : expects 2 arguments - 3
provided

Any ideas how I can use getline using file pointer?

[Tilman Kuepper]

Hello,

Any ideas how I can use getline using file pointer?

Nope, try this instead:

#include <string>
#include <fstream>

....
std::ifstream f("myfile.txt") ;
std::string line;
std::getline(f, line);
....

Good luck,
Tilman

[Tom Widmer]

Bit Byter wrote:

I have a method in a class implemented like this:

int foo (const char* filename, bool flg)
{
FILE *fp;
char *buffer, *tokstr, *tmp;
size_t size, toksize;
unsigned int i;

if ((fp = fopen(filename, "r")) == NULL)
return FILE_READ_ERROR ;

if (flg) {
buffer = NULL;

if (getline(&buffe r, &size, fp) == -1) { // <- COMPILER BARFS HERE
!
......
}
}
}
Error message I'm getting is this:

myfile.cpp(1033 ): error C2780: 'std::basic_ist ream<_Elem,_Tra its>
&std::getline(s td::basic_istre am<_Elem,_Trait s>
&,std::basic_st ring<_Elem,_Tra its,_Alloc> &)' : expects 2 arguments - 3
provided

Any ideas how I can use getline using file pointer?

You can't - you are trying to mix two different parts of the C++
standard libraries, stdio and IOstreams. For stdio, use fgets instead of
getline. For IOStreams, use std::ifstream rather than FILE*.

Tom