argument of function in c

Arguments and formal parameters of a function# Optional Parameters```if (a = = = undefined) a = [];```Equivalent to```A = a | | [];```These two sentences are completely equivalent, except that the latter need to declare a in advance.If the parameter

This article mainly introduces the function of variable parameter, then analyzes its principle, how the programmer realizes and encapsulates them, and finally it is possible problems and avoid measures.VA functions (variable argument function), the

Opponent argument, generally used to give the lower bound of the problem. If you use $p$ to represent the problem that you are discussing, $I $ to indicate the input of the problem, $A $ represents the algorithm based on the comparison operation to

When the number of arguments When the number of formal parameters, PHP will not error, it will only take the previous several parameters, the excess will be discarded. When you write a function in PHP, the function is normally called, and the

Formal parameters: All called "formal arguments" are parameters that are used when defining function names and body functions to receive the arguments passed when the function is called. The function of formal parameters is to realize the relation

PHP warns when the number of arguments The number of parameters, PHP is not an error, it will only take a few previous parameters, the extra will be discarded. To write a function in PHP, when calling a function in general, the changed value is a

In the C + + function template, the argument deduction is a very flexible mechanism, the literal meaning of the argument deduction is: To infer the type parameter of the function template by the type of the argument, give an example of a simple

I. Function default parameters1. Default parameter: Just give him a default value when declaring a parameter of the function .1#include 2 using namespacestd;3 4 voidShow (intA =1,intb =2,intc =3)5 {6cout Endl;7cout Endl;8cout Endl;9 }Ten One

function Declaration int getopt (int argc,char * CONST argv[],const char * optstring); function Description Getopt () is used to parse command line arguments. Parameter argc and argv are the number and contents of parameters passed by main ().The

The comparison function in sort compare to be declared as a static member function or a global function, not as a normal member function, or an error will be made. Because a non-static member function is dependent on a specific object, and the