进程参考代码

#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#include <pwd.h>
#include <sys/wait.h>

int main(void)
{
    pid_t pid = fork();
    int status;
    if(pid== -1)
    {
        printf("fork failed\n");
        return 0;
    }
    if(pid==0)
    {
        exit(0);
    }
    else
    {
        printf("parent process start\n");
        wait(&status);
        sleep(100);
//        printf("status =%d\n",WEXITSTATUS(status));
        printf("parent process end\n");
        return 0;
    }

    return 0;
}