using getline with ifstream

[manwanirg]

the function getline is a public member of istream and cin.getline can be used.
Since ifstream is publicily derived from istream, getline shall be available in ifstream as well. However,on solaris ver 2.7, getline is not recognised.

e.g
ifstream f("a.cpp");
string s;
f.getline(s,100);

why doesn't complier recognise fstream::getline(string,int) even though istream::getline(string,int) is recognized

[horace1]

the function getline is a public member of istream and cin.getline can be used.
Since ifstream is publicily derived from istream, getline shall be available in ifstream as well. However,on solaris ver 2.7, getline is not recognised.

e.g
ifstream f("a.cpp");
string s;
f.getline(s,100);

why doesn't complier recognise fstream::getline(string,int) even though istream::getline(string,int) is recognized

your string s should be a char *, e.g.

ifstream f("a.cpp");
char s[50];
f.getline(s,100);
 

[Ganon11]

If you want to keep it as a string, I've always used

getline(istreamVar, stringVar);

where istreamVar is either cin or my ifstream variable, and stringVar is the string you are trying to initialize.