getlogin - Query user ID

Definition	#include <stdlib.h> char *getlogin(void); getlogin returns the login name (i.e. userid) under which the calling program is being executed.
Return val.	Pointer to the name of the user id.
Note	getlogin writes its result into an internal C data area that is overwritten with each call!
Example	Pointer to the name of the user id. getlogin writes its result into an internal C data area that is overwritten with each call! #include <stdio.h> #include <stdlib.h> int main(void) {  printf("Example showing the use of getlogin():\n");  printf("Userid = %s\n", getlogin());  return 0; }