updated gitignore

c_compiler/example.c

@@ -0,0 +1,12 @@
+int factorial(int n) {
+  if (n <= 1) {
+    return 1;
+  }
+  return n * factorial(n - 1);
+}
+
+int main() {
+  int res = factorial(3);
+  print(res);
+  return 0;
+}