Linux file Management (C language library function III)

Find current directory The char *getcwd (char * buf,size_t size) getcwd function copies the absolute pathname of the current working directory to BUF, which indicates the size of the BUF if BUF is not large enough, The entire pathname cannot be mounted, and GETCWD returns NULL. The current directory is the directory where the current page is located, not the directory where the program resides, equivalent  to "pwd" command

//GETCWD ()#include <stdio.h>#include<stdlib.h>#include<unistd.h>#include<string.h>#include<errno.h>intMainintArgChar*args[]) {    //Get current directory    Charbuf[ the]={0}; /*getcwd () function header file is Unistd.h*/    Char*RES=GETCWD (BUF,sizeof(BUF)); if(res) {printf ("%s\n", BUF); }    return 0;}

Linux file Management (C language library function III)