Thread: String Copying problems.

Ok, here is the deal. I need a method to copy characters. Sounds simple, right? well, I can't seem to be able to pull it off acurately.
The problem is that my string I wish to copy has anywhere between 3 and 12 characters, and since this string is also a File name which i wish to load, accuracy is important.

I can try this

Char Filename[12];
Char Lastname[12];

cin.getline(Filename,12);
strcpy(Lastname.Filename);

and I get a "strcyp cannot convert 1 param from char to char *"

And if someone could point me towards the syntax that allows you to copy the contents from file X to File y(overwriting file Y, but keeping the name) that would be great!

First of all, with a full file name like "12345678.123" you will lose the last character. This is because getline(...) only reads n - 1 (in this case n == 12) characters to ensure there is space for the null terminator, which is how C/C++ knows where a string ends.

Also, you should enter:
strcpy(Lastname, Filename);

Use commas to seperate parameters, not periods.

Code:

#include <iostream>
#include <fstream>

using namespace std;

int main(){
        fstream file;
        file.open("myfile.txt",ios:: out|ios:: binary); //open file
        file.seekp(0, ios::beg); //move put marker to begginning
        file.write(const char*, int count); /* write something, I just put the prototype here */
        file.close; //close file
        return(0); 
}

This will open a file and overwrite the contents.