some improvements

myshell.c

@@ -84,19 +84,18 @@ for(int i=0;i<=lenght-1; i++){
 }
 
 void cd(char command[BUFFERSIZE]){
-  char *tok;
-    tok = strchr(command,' ');
+    char *temp;
+    temp = strchr(command,' ');
 
-        char *tempTok = tok + 1;
-        tok = tempTok;
-        char *locationOfNewLine = strchr(tok, '\n');
+        temp = temp+1;
+        char *locationOfNewLine = strchr(temp, '\n');
         if(locationOfNewLine) {
             *locationOfNewLine = '\0';
         }
-        chdir(tok);
+        chdir(temp);
 }
 
-void list_dir(char *name) {
+void ls(char *name) {
   DIR *dir;
    struct dirent *dp;
    struct stat statbuf;
@@ -113,7 +112,7 @@ void list_dir(char *name) {
    closedir(dir);
 }
 
-int main(int argc, char **argv) {
+int main() {
 
   char command[BUFFERSIZE];
 
@@ -124,8 +123,7 @@ int main(int argc, char **argv) {
 
       if (strcmp(command, "help\n") == 0){  help();  }
         else if (strcmp(command, "ls\n") == 0){
-          chdir(*(++argv));
-          list_dir(".");
+          ls(".");
           printf("\n");
         }
         else if (strcmp(command, "pwd\n") == 0){