Get the current working directory in Unix in C
This C program prints the current working directory in Unix:
#include <stdio.h> /* For "free". */ #include <stdlib.h> /* For "getcwd". */ #include <unistd.h> /* For "strerror". */ #include <string.h> /* For "errno". */ #include <errno.h> static void call_getcwd () { char * cwd; cwd = getcwd (0, 0); if (! cwd) { fprintf (stderr, "getcwd failed: %s\n", strerror (errno)); } else { printf ("%s\n", cwd); free (cwd); } } int main (int argc, char ** argv) { call_getcwd (); return 0; }
If getcwd
is called with zero arguments, it allocates memory
for the directory string.
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