Thread: Getting a File Extension?

You should store your files names in string objects rather than character arrays. Then you can use functions such as find_last_of(). This should make it nice and easy. This link should give you everything you need to know about what the string object offers.

http://www.cppreference.com/cppstring/index.html

However, with a C style string, you should be able to achieve the result with something like

Code:

#include <iostream>
#include <cstring>

int main() {
    const char *myFile = "C:/Files/Data.Info/Owner.Data.txt";
    char *extPtr;
    
    char *find = strpbrk(myFile,".");
    while(find != NULL) {
       extPtr = find+1;
       find = strpbrk(extPtr,".");
    }
    
    std::cout << extPtr;
    
    return 0;
}

Code:

#include <iostream>
#include <cstring>

int main() {
    const char *myFile = "C:/Files/Data.Info/Owner.Data.txt";
    char *extPtr;

    extPtr = std::strrchr(myFile, '.');

    if ( extPtr )
        std::cout << ++extPtr;

    return 0;
}

SKeane, <cstring>'s strrchr() is in the std namespace, too:

Code:

#include <iostream>
#include <cstring>

int main() {
    const char *myFile = "C:/Files/Data.Info/Owner.Data.txt";
    char *extPtr;

    extPtr = std::strrchr(myFile, '.');

    if ( extPtr )
        std::cout << ++extPtr;

    return 0;
}