C ++ demo of the function declaration and definition parameter value assignment being 0

In the following example, the parameter declaration in the C ++ Chinese method and the parameter value assignment in the definition are 0 calls. See the differences in the Red Section as follows. //////////////////////////////////////// /////////////// # Include <iostream> using namespace STD;
Class T1 {public: T1 () {} virtual ~ T1 ()
{} Public: // here, assign the parameter value of the test method declaration to 0 int test (INT Arg =
0 );};
// The style int T1: Test (INT Arg /*
= 0 */) {return 0 ;}
Void main () {int data; T1 T1; // call test to call data = T1 without parameters. test (); cout <data <Endl; System ("pause ");}; //////////////////////////////////////// /////////////////////