Can't we use scanf() twice in a program?

Question

Scanf function is not working twice in programmes in playground of sololearn .
Is it the compilers fault or its true that we can't use scanf twice???

Answer 1

You can use it any number of times.

Answer 2

You have to give input for all scanf statements in the begging each input should be separated by space or enter
https://code.sololearn.com/WhiNb9BkJUVC/?ref=app