search for a string

[madshov]

Hi everyone,
Does there exist a function to seach for a string in a file, when I have a pointer to a character array:

ifstream infile = f.c_str();

[weaknessforcats]

No. Strings don't exist in files. Data exists in files and you have to read the data into your array and interpret it.

That requires you know the format of the data in the disc file.

Say, if it's a text file, you read a record into a buffer using the read method or use the getline() function to do it for you. Then you can convert the buffer into a string object.

Then you can compare what you read with what you are looking for and if that wasn't it you read again and repeat the process until you read end of file.

If you know the STL you might try using input iterators with the find() algorithm. It might save you writing the above code yourself.

[madshov]

Thanks for the reply. I figured it out!