std::ifstream
Hi,
I am learing C++ with Thinking in C++ (Bruce Eckel) and we've done some
exercises on ifstream in the past chapter.
If I pass to my ifstream object a constant filePath (as we did in he book)
it works, but it doesn't as soon as I pass it a variable.
I have got one error araising from linesCount.cpp, line 6.
main.cpp
-------------------------------------------------------------------------------------
#include "linesCount.h"
int main()
{
return linesCount("C:\\TICPP-2nd-ed-Vol-one\\html\\Frames.html");
}
-------------------------------------------------------------------------------------
linesCount.h
-------------------------------------------------------------------------------------
#include <string>
int linesCount(std::string filePath);
-------------------------------------------------------------------------------------
linesCount.cpp
-------------------------------------------------------------------------------------
#include <string>
#include <fstream>
int linesCount(std::string filePath)
{
std::ifstream inFile(filePath);
std::string line;
int count(0);
while (std::getline(inFile,line))
{
count++;
}
return count;
}
-------------------------------------------------------------------------------------
The error message is:
linescount.cpp(6) : error C2664:
'std::basic_ifstream<_Elem,_Traits>::basic_ifstream(const char
*,std::ios_base::openmode,int)' : cannot convert parameter 1 from
'std::string' to 'const char *'
with
[
_Elem=char,
_Traits=std::char_traits<char>
]
No user-defined-conversion operator available that can perform this
conversion, or the operator cannot be called
Can you please help?
Thank you.