what is the cross-platform language sorry if i seem silly or stupid and thank you

Answer 1

Ability that makes a programming language develop softwares on several platform known as cross-platform
Ex:java, python, c++ etc(if I'm not wrong)
These softwares can run in different platform with less or, none changes in the source code

Answer 2

Yusof Hani Hope this article will be helpful for you https://en.wikipedia.org/wiki/Cross-platform_software
We are here to learn from each other don't think stupid