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https://github.com/riba2534/TCP-IP-NetworkNote.git
synced 2026-02-06 11:33:17 +08:00
42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#define BUF_SIZE 30
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int main(int argc, char *argv[])
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{
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int fds1[2], fds2[2];
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//const char* 以"\0"作为结束符
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char str1[] = "Do you like cooffee?";
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char str2[] = "I like coffee";
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char str3[] = "I like long legs";
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char * str_arr[] = {str1, str2, str3};
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char buf[BUF_SIZE];
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pid_t pid;
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int i;
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pipe(fds1), pipe(fds2);
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pid = fork();
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if(pid == 0)
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{
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for(i = 0; i < 3; ++i)
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{
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//strlen所作的是一个计数器的工作，它从内存的某个位置（可以是字符串开头，中间某个位置，甚至是某个不确定的内存区域）开始扫描，
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//直到碰到第一个字符串结束符'\0'为止，然后返回计数器值(长度不包含'\0')
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write(fds1[1], str_arr[i], strlen(str_arr[i]) + 1);//这里长度必须加上1，将字符串结束符加进去，否则会发生消息错乱
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read(fds2[0], buf, BUF_SIZE);
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printf("子进程收到的消息：%s\n", buf);
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}
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}
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else
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{
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for(i = 0; i < 3; ++i)
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{
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read(fds1[0], buf, BUF_SIZE);
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printf("父进程收到的消息：%s\n", buf);
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write(fds2[1], str_arr[i], strlen(str_arr[i]) + 1);
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}
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}
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return 0;
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} |