H friends,
As we know, a function returns a value and that value is saved somwhere. like
Code:
int Sum( int x, int y )
{
return x + y;
}
Total = Sum( 10, 20 );
The value 30 is saved in variable Total.
Now the question is, what int value does the function main return, and where is it saved. And can we see the value of the integer returned by main.
Please explain by the help of a small program.
Thank you very much!
Moderator's Comments:
114 posts and no code tags?!...
Last edited by zaxxon; 11-05-2012 at 03:40 PM..
Reason: code tags
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LEARN ABOUT HPUX
setresuid
setresuid(2) System Calls Manual setresuid(2)NAME
setresuid, setresgid - set real, effective, and saved user and group IDs
SYNOPSIS DESCRIPTION
sets the real, effective and/or saved user ID of the calling process.
If the current real, effective or saved user ID is equal to that of a user having appropriate privileges, sets the real, effective and
saved user IDs to ruid, euid, and suid, respectively. Otherwise, only sets the real, effective, and saved user IDs if ruid, euid, and suid
each match at least one of the current real, effective, or saved user IDs.
If ruid, euid, or suid is leaves the current real, effective or saved user ID unchanged.
sets the real, effective and/or saved group ID of the calling process.
If the current real, effective or saved user ID is equal to that of a user having appropriate privileges, sets the real, effective, and
saved group ID to rgid, egid, and sgid, respectively. Otherwise, only sets the real, effective and saved group ID if rgid, egid, and sgid
each match at least one of the current real, effective or saved group ID.
If rgid, egid, or sgid is leaves the current real, effective or saved group ID unchanged.
Security Restrictions
Some or all of the actions associated with this system call require the privilege (CHSUBJIDENT). Processes owned by the superuser will
have this privilege. Processes owned by other users may have this privilege, depending on system configuration.
See privileges(5) for more information about privileged access on systems that support fine-grained privileges.
RETURN VALUE
Upon successful completion, and return 0; otherwise, they return -1 and set to indicate the error.
ERRORS
and fail if any of the following conditions are encountered:
ruid, euid, or suid (rgid, egid, or sgid) is not a valid user (group) ID.
None of the conditions above are met.
AUTHOR
and were developed by HP.
SEE ALSO exec(2), getuid(2), setuid(2), privileges(5).
setresuid(2)
11-05-2012
