Answer 1

1. You don't have to write std before methods from std namespace if you already declared it (using namespace std).
2. Variable names cannot be have a name containing space (use _ instead).
3. You cannot assign number to a variable of type string.
4. You must use << for cout (>> is for cin).
https://code.sololearn.com/c4SQBPuqIUzG/?ref=app