How do I get the user name of the current user?

Question

I want to access the user name in the Windows using C programming and use that name to create the path to the particular file like \"c:\\users\\john\\Roaming.....and so on\"

Answer 1

You can get the name of the current user with GetUserName:

#include 
#include 
#include 

int main()
{
    char name[UNLEN + 1];
    DWORD cch = UNLEN + 1;
    if (GetUserName(name, &cch))
    {
        char cmd[100 + UNLEN + 1];
        sprintf(cmd, "echo The username is \"%s\"", name); // Silly demo command
        system(cmd);
    }
    return 0;
}

Use GetUserNameEx if you want the name in a specific format.

If you need to get the path to a special folder like "My Documents" or "Desktop" you should use the special folder functions like SHGetFolderPath or SHGetKnownFolderPath.