ifstream trouble

[aab1990]

I am doing a project for school and I have to get information from a file. All is good when i write the code all in main, but that isn't very good coding. I have a very small knowledge of arrays and such as I am just beginning. I have coded in python so I know basic programming logic. Here's the code and the errors



using namespace std;

#include <string>
#include <iostream>
#include <fstream>


struct Tide
{
string Date;
string Time;
float Height;
};

void getData(string , Tide [], string& , string& )

int main()
{
const int MAX = 124;

string FileName;
string location;
string tideOfFirstLine;

Tide CompleteDataList[MAX];

/* cout << "\nEnter name of the file to recieve input from: ";
cin >> FileName;*/

getData( "/user/cse232/Projects/project05.data", CompleteDataList , location, tideOfFirstLine );
cout << location;

}


/*----------------------------------------------------------------------------
Get Data from file and build array with proper data also creating variablesi
for the place and which tide comes first.

Recieve: InFile (string), list[array], place[string], firstTide[string]
Return: place[string], firstTide[string]
-----------------------------------------------------------------------------*/

void getData(string InFile, Tide list[], string& place, string& firstTide)
{
Tide temp;
int Num = 0;

ifstream tideFile;

tideFile.open(InFile, ios::in);

getline(tideFile, place);
getline(tideFile, firstTide);
}



proj05.solution.cpp: In function 'void getData(std::string, Tide*, std::string&, std::string&)':
proj05.solution.cpp:64: error: no matching function for call to 'std::basic_ifstream<char, std::char_traits<char> >::open(std::string&, const std::_Ios_Openmode&)'
/usr/lib/gcc/i486-linux-gnu/4.1.2/../../../../include/c++/4.1.2/fstream:495: note: candidates are: void std::basic_ifstream<_CharT, _Traits>::open(const char*, std::_Ios_Openmode) [with _CharT = char, _Traits = std::char_traits<char>]

[jsmith]

tideFile.open(InFile.c_str(), ios::in); to fix your compile error

[aab1990]

I guess it was a pretty simple fix. Can you explain exactly what that does?

[Bazzy]

stream::open takes a C string argument, InFile is a C++ string
InFile.c_str() returns the C representation of the C++ string

http://www.cplusplus.com/reference/string/string/c_str.html