50 lines
1.2 KiB
C++
50 lines
1.2 KiB
C++
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#include <iostream>
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#include <cstring>
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class CTString {
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private:
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char *str;
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static int objectCount; // 静态成员变量，用于记录对象个数
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public:
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CTString() {
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str = NULL; // or str = 0;
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objectCount++; // 增加对象计数
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}
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CTString(const char *s) {
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str = new char[strlen(s) + 1];
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strcpy(str, s);
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objectCount++;
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}
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~CTString() {
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objectCount--; // 先减少对象计数
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delete[] str; // 释放字符串内存
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}
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void Print() {
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if (str)
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std::cout << str << std::endl;
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else
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std::cout << "空字符串" << std::endl;
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}
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void Copy(const char *s) {
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delete[] str;
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str = new char[strlen(s) + 1];
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strcpy(str, s);
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}
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static int getObjectCount() {
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return objectCount;
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}
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};
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int CTString::objectCount = 0; // 静态成员变量初始化
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int main() {
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CTString *pstr;
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pstr = new CTString;
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pstr->Print();
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pstr->Copy("hello");
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pstr->Print();
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std::cout << "总共创建的对象数量: " << CTString::getObjectCount() << std::endl;
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delete pstr;
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// 等待用户按下任意键后再退出
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std::cin.get();
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return 0;
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}
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