3.18

README.md

@@ -1,2 +0,0 @@
-# Operating_System
-

fun.h

@@ -2,8 +2,26 @@
 #define FUN_H_INCLUDED
 
 #define MAXLINE (80)
-#include "fun_2.c"
-#include "fun_1.c"
+void eval(char *cmdline);
+void sigint_handler();
+pid_t getpid(void);
+pid_t main_proc_pid;
 
 
+
+int Is_pipe(char **argv);
+int pipe(int *fd);
+int Is_redirect(char **argv);
+void history(char *cmdline);
+void print_history(char *argv);
+int fork();
+int close(int arg);
+int dup(int fd);
+int execvp(const char *, char * const *);
+int wait(int arg);
+int parseline(const char *cmdline, char **argv);
+int builtin_cmd(char **argv);
+int dup2(int fd, int arg);
+int chdir(const char *path );
+
 #endif // FUN_H_INCLUDED

fun_1.c

@@ -2,14 +2,9 @@
 #include <stdlib.h>
 #include <string.h>
 #include <signal.h>
-#include<fcntl.h>
-
+#include <fcntl.h>
 #include "mytop.c"
-
-int parseline(const char *cmdline, char **argv);
-int builtin_cmd(char **argv);
-int dup2(int fd, int arg);
-int chdir(const char *path );
+#include "fun.h"
 
 void eval(char *cmdline)
 {
@@ -41,6 +36,7 @@ void eval(char *cmdline)
                 printf("%s:Command not found.\n",argv[0]);
                 exit(0);
             }
+            exit(0);
         }
         if(!isBg)
         {

fun_2.c

@@ -1,15 +1,9 @@
+#include <stdlib.h>
+#include <stdio.h>
 #include <string.h>
 #include<fcntl.h>
 
-
-void history(char *cmdline);
-void print_his(char *argv);
-int pipe(int *fd);
-int fork();
-int close(int arg);
-int dup(int fd);
-int execvp(const char *, char * const *);
-int wait(int arg);
+#include "fun.h"
 static int num = 0;
 static char storage[MAXLINE][MAXLINE];
 

main.c

@@ -2,10 +2,8 @@
 #include <stdlib.h>
 #include "fun.h"
 
-void eval(char *cmdline);
-void sigint_handler();
-pid_t getpid(void);
-pid_t main_proc_pid;
+#include "fun_2.c"
+#include "fun_1.c"
 
 int main()
 {

mytop.c

@@ -335,3 +335,9 @@ void mytop()
     print_procs(prev_proc,proc,1);
     return;
 }
+/*
+void mytop()
+{
+    
+}
+*/