Extract base path from a pathname in C

Question

Question

How do you extract the base path from pathname in C?

Are there any functions built into the C language or the C-Runtime L

Answer 1

Before str is the full path and file name, after str is just the path:

char dir_ch = '\\'; // set dir_ch according to platform
char str[] = "C:\\path\\to\\file.c";
char *pch = &str[strlen(str)-1];

while(*pch != dir_ch) pch--;
pch++;
*pch = '\0';