| 28 | } |
| 29 | |
| 30 | int main() |
| 31 | { |
| 32 | int n{ plus(3, 4) }; |
| 33 | std::cout << "plus(3, 4) returns " << n << std::endl; |
| 34 | |
| 35 | double d{ plus(3.2, 4.2) }; |
| 36 | std::cout << "plus(3.2, 4.2) returns " << d << std::endl; |
| 37 | |
| 38 | std::string s1{ "aaa" }; |
| 39 | std::string s2{ "bbb" }; |
| 40 | auto s3{ plus(s1, s2) }; |
| 41 | std::cout << "With s1 as " << s1 << " and s2 as " << s2 << std::endl; |
| 42 | std::cout << "plus(s1, s2) returns " << s3 << std::endl; |
| 43 | |
| 44 | // The extra part: |
| 45 | std::string s{ plus("he", "llo") }; |
| 46 | std::cout << "plus(\"he\", \"llo\") returns " << s << std::endl; |
| 47 | } |