C++ Notes C12 Functions
在閱讀 The C++ Programming Language 4th Edition - Bjarne Stroustrup 過程中的紀錄。
12.1 - Function Declarations
12.1.1 - Why Functions
function 行數建議在 avg 7 lines, or 40 lines
12.1.2 - Parts of a Function Declaration
12.1.3 - Function Definitions
12.1.4 - Returning Values
12.1.5 - inline Functions
12.1.6 - constexpr Functions
12.1.6.1 - constexpr and References
12.1.6.2 - Conditional Evaluation
12.1.7 - [[noreturn]] Functions
12.1.8 - Local Variables
12.2 - Argument Passing
12.2.1 - Reference Arguments
12.2.2 - Array Arguments
parameter of type : reference to array
void f(int(&r)[4]) {
cout << "1:" << r[0] << ", 2:" << r[2] << endl;
}
int main() {
int a1[] = {1,2,3,4};
f(a1);
return 0;
}
12.2.3 - List Arguments
12.2.4 - Unspecified Number of Arguments
- use
variadic template - use
initializer_list, single type - using ellipsis:
...