What is the problem in erase function ?

Question

the assignment is :
"Use the map<string, int> STL container to count occurrences of words.
Use the word as the key and the count as the value.
- User should be able to enter words as desired until the word “done” is written.
- After entering all words, your program should print each word with its count.
- Then, erase all words that start with letter ‘a’ and print again."
https://code.sololearn.com/crMHfR8jH9il/?ref=app

Answer 1

Erasing invalidates the iterator(s).
erase returns a new and valid iterator to the next object.
This also means that you shouldn't advance the iterator when you erase or risk going over the end.

Answer 2

when i run it, it give me run time error!

Answer 3

i do not run the code on sololearn, i run it on codeblocks

Answer 4

i tried to write :
Map_Words.erase(it++);
and it erase correctly but not at the same time, it need to call the function more times, but i need to erase all words from one call to the function.