changed formating and added cd and exit

main.c

@@ -3,6 +3,15 @@
 #include<sys/wait.h>
 #include<unistd.h>
 #include<string.h>
+int handleBuiltins(char **args) {
+  if(strcmp(args[0], "cd") == 0) {
+    chdir(args[1] == NULL ? getenv("HOME") : args[1]);
+    return 1;
+  }
+  else if(strcmp(args[0], "exit") == 0) {
+    exit(0);
+  } else { return 0;}
+}
 char **parse(char *line) {
   char **args= malloc(64 * sizeof(char *));
   int i = 0;
@@ -18,12 +27,18 @@ char **parse(char *line) {
 int main() {
 	char line[1024];
 	while(1) {
-		printf("$");
+		char *user = getenv("USER");
+		char dir[1024];
+		getcwd(dir, sizeof(dir));
+		char host[1024];
+		gethostname(host, sizeof(host));
+		printf("%s@%s %s$", user, host, dir);
 		fflush(stdout);
 		char *result = fgets(line, sizeof(line), stdin);
 		if(result == NULL) return 0;
 		char **parsed = parse(line);
 		if(parsed[0] == NULL) { free(parsed); continue; }
+		if(handleBuiltins(parsed)) { free(parsed); continue; }
 		pid_t pid = fork();
 		if(pid == 0) {
 		  if(execvp(parsed[0], parsed) == -1 ) {