1. Function return type deduction:- For more detail https://madanswer.com/12392/C-14-feature-function-return-type-deduction.
2. Alternate type deduction on declaration:- For more detail https://madanswer.com/12395/C-14-feature-alternate-type-deduction-on-declaration
3. Relaxed constexpr restrictions:- For more detail https://madanswer.com/12401/Relaxed-constexpr-restrictions-c-14-features
4. Variable templates:- For more detail https://madanswer.com/12403/Variable-templates-c-14-features
5. Aggregate member initialization:- For more detail https://madanswer.com/12405/Aggregate-member-initialization-c-14-features
6. Binary literals:- For more detail https://madanswer.com/12407/Binary-literals-c-14-feature
7. Digit separators:- For more detail https://madanswer.com/12409/Digit-separators-c-14-feature
8. Generic lambdas:- For more detail https://madanswer.com/12399/Generic-lambda-c-14-feature
9. Lambda capture expressions: - For more detail https://madanswer.com/12411/Lambda-capture-expressions-c-14-feature
10. The attribute [[deprecated]]:- For more detail https://madanswer.com/12413/The-attribute-deprecated-c-14-feature