diff --git a/fun.h b/fun.h
index 4092159..c1db301 100644
--- a/fun.h
+++ b/fun.h
@@ -1,15 +1,9 @@
 #ifndef FUN_H_INCLUDED
 #define FUN_H_INCLUDED
-#define MAXLINE (80)
 
+#define MAXLINE (80)
 #include "fun_2.c"
 #include "fun_1.c"
 
 
-//void history(char *cmdline);
-//void print_his(char *argv);
-
-//void eval(char *cmdline);
-//int parseline(const char *cmdline, char **argv);
-
 #endif // FUN_H_INCLUDED
diff --git a/fun_1.c b/fun_1.c
index 1340cb8..c636f78 100644
--- a/fun_1.c
+++ b/fun_1.c
@@ -5,7 +5,11 @@
 #include<fcntl.h>
 
 #include "mytop.c"
-//#include "fun.h"
+
+int parseline(const char *cmdline, char **argv);
+int builtin_cmd(char **argv);
+int dup2(int fd, int arg);
+int chdir(const char *path );
 
 void eval(char *cmdline)
 {
diff --git a/fun_2.c b/fun_2.c
index b5fdeef..f8ef86e 100644
--- a/fun_2.c
+++ b/fun_2.c
@@ -1,7 +1,15 @@
 #include <string.h>
-#include<fcntl.h> 
-//#include "fun.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* command, char* argv[]);
+int wait(int arg);
 static int num = 0;
 static char storage[MAXLINE][MAXLINE];
 
diff --git a/main b/main
new file mode 100755
index 0000000..d28b99d
Binary files /dev/null and b/main differ
diff --git a/main.c b/main.c
index 492057a..9b98d35 100644
--- a/main.c
+++ b/main.c
@@ -1,15 +1,11 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include "fun.h"
+
+void eval(char *cmdline);
+void sigint_handler();
+pid_t getpid(void);
 pid_t main_proc_pid;
-void sigint_handler() 
-{
-    pid_t pid = getpid();
-    if(pid != main_proc_pid)
-    {
-        exit(0);
-    }
-}
 
 int main()
 {
@@ -26,4 +22,13 @@ int main()
         history(cmdline);
     }
     return 0;
+}
+
+void sigint_handler() 
+{
+    pid_t pid = getpid();
+    if(pid != main_proc_pid)
+    {
+        exit(0);
+    }
 }
\ No newline at end of file
diff --git a/mytop.c b/mytop.c
index c88cc73..0e3bf60 100644
--- a/mytop.c
+++ b/mytop.c
@@ -1,5 +1,4 @@
 
-//#define mytop_h
 #include <stdio.h>
 #include <unistd.h>
 #include <pwd.h>
@@ -313,13 +312,10 @@ void get_procs(void)
 void getkinfo(void)
 {
     FILE *fp;
-
     if ((fp = fopen("/proc/kinfo", "r")) == NULL) {
-        
         exit(1);
     }
-    if (fscanf(fp, "%u %u", &nr_procs, &nr_tasks) != 2) {
-       
+    if (fscanf(fp, "%u %u", &nr_procs, &nr_tasks) != 2) { 
         exit(1);
     }
     fclose(fp);
@@ -338,4 +334,4 @@ void mytop()
         get_procs();
     print_procs(prev_proc,proc,1);
     return;
-}
\ No newline at end of file
+}