Added example input and improved fishbones.

os/ass3/example.in

+f a b f c d P e g P x x q

os/ass3/fishbones.c

@@ -67,17 +67,16 @@ static void gup(FILE * log1, FILE * log2, int pipefd[2], int cpid)
     fclose(log3);
 }
 
-#define STRING_LENGTH		(512)
+#define STRING_LENGTH (512)
 
-int
-main(void)
+int main(int argc, char ** argv)
 {
     FILE * log1;
     FILE * log2;
     
 	char buf;
     
-	int kiddoCount = 0;
+	int kids = 0;
     int pipefd[2];
 
     log1 = fopen("child.log1", "wt+");
@@ -89,8 +88,6 @@ main(void)
 
     // create the pipe somewhere around here (why?).
     // remember to test for success!! 
-	printf("while..\n");
-	
 	if( pipe(pipefd) == -1 )
 	{
 		perror("pipe");
@@ -99,7 +96,6 @@ main(void)
 									
 	pid_t cpid;
 
-
     while( (buf = getchar()) )
     {
 		// You can now choose to use only the first character in the
@@ -109,6 +105,7 @@ main(void)
 		// and write it into the pipe (unless you have to call fork)
 	
 		printf("%c", buf);
+		fflush(stdout);
 
 		switch( buf )
 		{
@@ -118,7 +115,7 @@ main(void)
 
 			case 'f':
 
-				kiddoCount++;
+				kids++;
 
 				// When you fork, be sure to print the process id of the child
 				// (if the fork succeeds) and an error message otherwise
@@ -134,25 +131,19 @@ main(void)
 				if( cpid == 0 )
 				{
 					// Child reads from pipe u1
-		
-					gup(log1, log2, pipefd, kiddoCount);
+					gup(log1, log2, pipefd, kids);
 
 					_exit(EXIT_SUCCESS);
-
 				}
 				else
 				{
-					/* Parent writes argv[1] to pipe */
+					/* Parent writes to pipe */
+					//write(pipefd[1], buf, len);
+
 					// Close unused read end
 					close(pipefd[0]);
-
-					//if( write(pipefd[1], argv[1], strlen(argv[1])) == -1 )
-					//{
-					//	fprintf(stderr, "write error: %s\n", strerror(errno)); 
-					//	exit(EXIT_FAILURE);
-					//}
-
 					close(pipefd[1]);          /* Reader will see EOF */
+					
 					wait(NULL);                /* Wait for child */
 					exit(EXIT_SUCCESS);
 				}