How to set the timer

sleepygg

How to set a timeout. If the execution time exceeds this time during the task execution, the task execution fails. How can the boss solve it?
    thank you very much!

orangedj

alarm (some time);

Capture SIGALRM

zjwzjw

SetTimer (/ * time * /);

When the time is up, the OnTime function is triggered,
Just complete the exit here. . . . . . . . . . . .

ap2000ap

Add what is said upstairs!
#include <setjmp.h>
#define TIMEOUT 5
static jmp_buf env;
static void sig_timeout (int sig)
{
        longjmp (env, 1);
}
main ()
{
        int num;
        signal (SIGALRM, sig_timeout);
        if (setjmp (env)! = 0)
        {
                printf ("Time out !!\n");
                exit (-1);
        }
        printf ("please input a num !!\n");
        alarm (TIMEOUT);
        scanf ("% d",&num);
        alarm (0);
        printf ("u enter a num in time !!\nexit !!\n");
}

ap2000ap

#include <signal.h>
#include <stdio.h>

zhu3071

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