I already gave an answer in the comments of your code "Binary No":
You copied the code from another editor, right?
Doing that, you also copied all the invisible characters that are shown in the other editor.
They cannot be seen here, but trigger an error on the SoloLearn Playground ...
Just replace all your blanks with regular 'Space' blanks and it will run without error!!!
Don't forget to also replace the blanks from the blank new lines!
Martin Taylor Respect for being so patient. He did state that the hello world program runs, but it‘s really hard to tell from the waay he writes.
Yogesh Rajput did you install a compiler. Is a hello world program (or Martin Taylors test program) really running successfully?
Yogesh Rajput as already told by other people here, your code along with error message generated by the compiler is required in order to understand what is the problem.
Provide them in your question description here.
1) for code snippets, you can use code playground to copy paste the entire program and share the saved link here.
2) otherwise if you are using app then you can also create a post containing the pic of the code and error it is generating
3) if you are for some reason not able to do either then just copy pasting the error message will also help solving your problem.