malloc function Post: 29093

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1 . Thanks everyone who read the post. 2 . the programe is that : #include <stdio.h> #include <string.h> void do_it(char *p) { p = (char *) malloc(100); (void )strcpy(p,"1234"); } int main(void) { char *p; do_it(p); (void )printf("p = %s \n",p);

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hello sir since by mentioning a integer pointer and storing the integers by incrementing the pointer value then what is the purpose of malloc? u can decalre it as in t *p; several integers can be stored by incrementing the value of p, hence what is the diffrence between this...

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Hi! I hope this is the correct forum to post the question even if I'm a newbie... I am a C-newbie (and really on the edge to be a C-addict ;) ) and have a question. When should I use malloc? To state it differently, when should I NOT use malloc? For instance, if I have an array of...

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Good day! I'm a newbie in C. I'm trying to get an unlimited input from the user using malloc then printing the inputs after the user presses enter. My code works, but there's a warning that I don't know how to fix. Please help me. Thank you. Here's my code: #include <stdio.h> #include...

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LEARN ABOUT SUNOS

volmgt_running

volmgt_running(3VOLMGT) 				Volume Management Library Functions				   volmgt_running(3VOLMGT)

NAME

       volmgt_running - return whether or not Volume Management is running

SYNOPSIS

       cc [ flag ... ] file ... -lvolmgt [ library ... ]
       #include <volmgt.h>

       int volmgt_running(void);

DESCRIPTION

       volmgt_running() tells whether or not Volume Management is running.

RETURN VALUES

       A non-zero value is returned if Volume Management is running, else  0 is returned.

ERRORS

       volmgt_running() will fail, returning 0, if a stat(2) or open(2) of /dev/volctl fails, or if any of the following is true:

       ENXIO	       Volume Management is not running.

       EINTR	       An interrupt signal was detected while checking to see if Volume Management was running.

EXAMPLES

       Example 1: Using volmgt_running()

       To see if Volume Management is running:

       if (volmgt_running() != 0) {
	       (void) printf("Volume Management is running
");
       } else {
	       (void) printf("Volume Management is NOT running
");
       }

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       cc(1B), vold(1M), open(2), stat(2), volmgt_check(3VOLMGT), volmgt_inuse(3VOLMGT), attributes(5), volfs(7FS)

NOTES

       Volume Management must be running for many of the Volume Management library  routines to work.

SunOS 5.10							    31 Dec 1996 					   volmgt_running(3VOLMGT)

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