string help

[jobolikescake]

in my program i use the strcat(name, ".txt") to add .txt to the name imputed and to save it as a text file.

well later when i use it to call that same file back how do i remove the .txt so that the name can be used for something else.

thanks for any help.

[Trauts]

Originally posted by jobolikescake
in my program i use the strcat(name, ".txt") to add .txt to the name imputed and to save it as a text file.

well later when i use it to call that same file back how do i remove the .txt so that the name can be used for something else.

thanks for any help.

Try this.

//other code goes here (before the strcat)
char name2[strlen(name)];
strcpy(name2,name);
strcat(name, ".txt");

Then just use name2 when you want the original name

[mickey]

you can use std::string and all your troubles will be gone,

[Hammer]

char name2[strlen(name)];
strcpy(name2,name);
strcat(name, ".txt");

Oops, you didn't get the size of the name2 array correct, and you blew the buffer. To explain: you made name2 long enough to hold the characters within name, but you forgot about the null terminator, and also the .txt chars, so they're off in someone elses memory.

[Inquirer]

I'm kinda fuzzy on how this works, buit i believe you can use strstr() to find out where ".txt" is in the string. If you used the STL string class, you could then use erase() them.

[Hammer]

If you have a char array holding your string, and it looks something like this:

>>filename.txt

then all you need to do to remove the .txt is replace the . with a \0. So, find a way of getting a pointer to the dot. You could use strstr(), strchr(), or strlen()-4. This is all a C way of doing things though, maybe you should try something more C++ like.

[jobolikescake]

just using the strcpy(name1, nameone) works just fine by its self

thanks for the help, that was the one part of my program that i couldnt get right, but now that i have it now ive finished my program.