What is the second program that I should learn?

Question

Finish with the python course and I do not know which code I should follow, start with this one because of its ease, now I want something new, which is better to follow?

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Answer 1

From the FAQ, "For general application programming: Python, C++, and Ruby; then Java, C#, or Swift, based on the platform you're targeting."

So, in your case C++ fits the best :)