Merge pull request #2158 from Shaikh-Ubaid/minor_improvements

Minor improvements

Author: certik

build.sh

@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+
+./build0.sh
+./build1.sh

examples/expr2.py

@@ -1,10 +1,9 @@
+from lpython import i32
+
 def main0():
     x: i32
     x = (2+3)*5
     print(x)
 
-main0()
-
-# Not implemented yet in LPython:
-#if __name__ == "__main__":
-#    main()
+if __name__ == "__main__":
+   main0()