头文件
#ifndef __header__ #define __header__ #include<string> using namespace std; class TEST { public: string test; TEST(char *buf); TEST(); ~TEST(); char data[20]; char * operator()(); //返回私有成员字符串 }; #endif
实现文件
#include"head.hpp" #include <string.h> #include <iostream>
using namespace std; TEST::TEST() { cout<<"constructor() "<<endl; } TEST::TEST(char*buf) { cout<<"constructor() "<<endl; memset(data,0x00,sizeof(data)); memcpy(data,buf,sizeof(data)); } TEST::~TEST() { cout<<"destroy constrcut() "<<endl; } char *TEST::operator()() { return data; }
测试文件
#include"head.hpp" #include<string> #include<iostream> #include<stdio.h> #include<string.h> using namespace std; int main() { char buf[8]={0x00}; memcpy(buf,"hello",6); TEST tt(buf); char *buf1 = tt(); cout<<"buf=="<<tt.data<<endl; cout<<"buf1=="<<buf1<<endl; return 0; }
头文件
#ifndef __header__ #define __header__ #include<string> using namespace std; struct test_struct { int i; }; class TEST { private: struct test_struct *tt; public: TEST(); TEST(int a); ~TEST(); operator struct test_struct*(); //返回私有成员结构体指针 }; #endif
实现文件
#include"head.hpp" #include<stdio.h> #include <stdlib.h> #include <string.h> #include <iostream> using namespace std; TEST::TEST() { cout<<"constructor() "<<endl; } TEST::TEST(int a) { cout<<"test struct constructor"<<endl; tt = (struct test_struct*)malloc(sizeof(struct test_struct)); tt->i = a; } TEST::~TEST() { cout<<"destroy constrcut() "<<endl; } TEST::operator struct test_struct*() { return tt; } 测试文件
#include"head.hpp" #include<string> #include<iostream> #include<stdio.h> #include<string.h> using namespace std; int main() { TEST t(5); struct test_struct *a; //a=*t; //wrong a=t; cout<<"a->i="<<a->i<<endl; //cout<<"t->i"<<t->i<<endl; //wrong //cout<<"t.tt->i"<<t.tt.->i<<endl; //wrong return 0; }
