Linux system programming pipeline to achieve paternal interprocess communication __ Block chain

#include <stdio.h> #include <string.h> #include <unistd.h> #include <sys/types.h> int main (void
	{int pipefd[2] = {-1};
	int ret = pipe (PIPEFD);

	int isign = 0;
	Char camsg[32] = {' I '};

	pid_t pid = fork ();
	if (ret = = 1) {perror ("No Name pipe ...");
	Eixt (2);
				}else if (pid > 0) {while (1) {if (0 = isign) {printf ("Father Send Message:");
				Gets (CAMSG);
				Close (pipefd[0]);
				Write (Pipefd[1],camsg,strlen (camsg) + 1);
			iSIGN = 1;
				}else if (1 = isign) {Read (pipefd[0],camsg,sizeof (camsg));
				printf ("Child say:%s\n", camsg);
			isign = 0;
		Sleep (2);
				}}else if (pid = = 0) {while (1) {if (1 = isign) {printf ("Child Send Message:");
				Gets (CAMSG);
				Write (pipefd[1],camsg,sizeof (camsg));
			isign = 0;
				}else if (0 = isign) {Read (pipefd[0],camsg,sizeof (camsg));
				printf ("Father Say:%s\n", camsg);
			iSIGN = 1;
		Sleep (2);
	} printf ("Hello nidaye\n");
return 0; }