我很擅长使用C语言.我以前处理过
Java和ActionScript,但现在我想学习这种强大的语言.由于C授予程序员显式使用指针的能力,因此我对使用箭头成员运算符感到困惑.这是我尝试编写的示例代码.
main.cpp中：
#include <iostream>
#include "Arrow.h"
using namespace std;
int main()
{
Arrow object;
Arrow *pter = &object;
object.printCrap(); //Using Dot Access
pter->printCrap(); //Using Arrow Member Operator
return 0;
}
Arrow.cpp
#include <iostream>
#include "Arrow.h"
using namespace std;
Arrow::Arrow()
{
}
void Arrow::printCrap(){
cout << "Steak!" << endl;
}
在上面的代码中,它所做的只是使用两种方法(Dot和Arrow)打印牛排.
简而言之,在使用C编写实际应用程序时,何时使用箭头符号？由于我以前的编程经验,我习惯使用点符号,但箭头对我来说是全新的.
解决方法
好问题,
Dot(.) this operator is used for accessing the member function or
sometime the data member of a class or structure using instance
variable of that class/Structure.
object.function(); object.dataMember; //not a standard for class.
arrow(->) this operator is used for accessing the member function or
sometime the data member of a class or structure but using pointer of
that class/Structure.
ptr->function(); ptr->datamember; //not a standard for class.
