c - 程序中有什么错误？

Question

我用 C 语言编写了这个基础 fork 程序。但是编译器向我发出错误。代码是

#include<stdio.h>
#include<sys/stat.h>
#include<ctype.h>

void childProcess(){
    printf("From child process with process id %d\n", getpid());
}


void parentProcess(){
    printf("Parent Process with id %d\n", getpid());
    pid_t pid = fork();
    if (pid == 0){
        childProcess();
    } else if (pid > 0){
        printf("Parent spawned process %d\n", pid);
    } else{
        printf("Forking isn't supported!\n");
    }

}

int main(){
    parentProcess();

}

错误是

C:\Users\ADMINI~1\AppData\Local\Temp\ccORJc6N.o forking.c:(.text+0x3e): undefined reference to `fork'

Answer 1

您正在使用 Windows，看起来您不能在 Windows 上执行此操作。以下是一些相关的帖子:

• Undefined reference to fork() in Code::Blocks editor in Windows OS
• Why does my compiler not accept fork(), despite my inclusion of <unistd.h>?
• Library that has reference to fork() in C <- 这个问题的答案可能对你有帮助

当谷歌搜索你的错误时，这些是前三个链接:undefined reference to `fork'