add more escape codes to printf

src/commands/printf.c

@@ -72,6 +72,19 @@ static void handle_slash(char n) {
         case 'b':
             putchar('\b');
             break;
+        case 'f':
+            putchar('\f');
+            break;
+        case 'e':
+            putchar('\e');
+        case 'a':
+            putchar('\a');
+            break;
+        case '"':
+            putchar('"');
+            break;
+        case 'c':
+            exit(EXIT_SUCCESS);
         default:
             putchar('\\');
             putchar(n);