// MultiProcess.c#include <sys/types.h>#include <unistd.h>#include <stdlib.h>#include <stdio.h>
int main(){ pid_t pid; // 定义子进程ID
pid = fork(); if (pid <0) { // 创建子进程 printf("fork err\n"); exit(-1); } else if (pid == 0) { /* child process */
int a = 10; int b = 100; int c = 0; int d;
d = b/a; printf("d = %d\n", d); printf("c=%d\n",c); d = a/c; printf("d = %d\n", d); // 除0错误,尼玛啊，这句没有输出！！
exit(0); } else { /* parent process */ sleep(4); wait(-1); // 等待子进程结束 exit(0); }
return 0;}
int main(){ pid_t pid; // 定义子进程ID
pid = fork(); if (pid <0) { // 创建子进程 printf("fork err\n"); exit(-1); } else if (pid == 0) { /* child process */
int a = 10; int b = 100; int c = 0; int d;
d = b/a; printf("d = %d\n", d); printf("c=%d\n",c); d = a/c; printf("d = %d\n", d); // 除0错误,尼玛啊，这句没有输出！！
exit(0); } else { /* parent process */ sleep(4); wait(-1); // 等待子进程结束 exit(0); }
return 0;}
