convert string to char*

[ViperTok]

I have part of my code that i do not know how to solve the error. my input in the file is something like.

age, (4, years, 5, months)
age, (8, years, 7, months)
age, (4, years, 5, months)

char * point
ifstream file;
file.open(file.c_str());
if(file.is_open())
{
while(file.good())
{
(getline(file, take));
point =strtok(take,", ()");
}
}

im trying to remove all the delimiters and that is bothering me very much. How can i convert take into char * to solve the error which reads cannot convert"std::string to char*"? i have tried changing my take into take.c_str() but its still the same.

[Peter87]

&take[0]

[ViperTok]

Thanks alot! That solved my error.

[vlad from moscow]

strtok works with character arrays. You may not pass an object of type std::string to the function. Also strtok changes the original character array. So you may not use neither take.c_str() nor take.data().
I would suggest to use std::istringstream( take ) instead of strtok.

[ViperTok]

Thanks alot for your suggestion. i will start reading on how to implement that. I'm currently still trying to split the data input. when i tried running the code the 1st line was ok. But subsequent line has age missing.

age
4
years
5
months
8
years
7
months

do you know the reason why?

[vlad from moscow]

Show your updated code.

[ViperTok]

char * point;
ifstream file;
file.open(file.c_str());
if(file.is_open())
{
while(file.good())
{
(getline(file, take));
point =strtok(&take[0], ", ()");
}
}

also i tried using istringstream but the program crashed when i entered my file name.

char * point;
char take[256];
ifstream file;
file.open(file.c_str());
if(file.is_open())
{
while(file.good())
{
cin.getline(take, 256);
point =strtok(take,", ()");
}
}