從C看C＋＋之(二)獲取和釋放內存

　源碼:

#include <iostream>
#include <string.h>

#define BUFSZ   1024

int main(void)
{

        const char *q = "I am sorry!";
        char *pTmp = NULL;

        pTmp = new char[BUFSZ];

        memcpy(pTmp,q,strlen(q));

        std::cout << pTmp << std::endl;

        delete pTmp;

        pTmp = NULL;

        return 0;
}

　運行:

root@se7en-LIFEBOOK-LH531:~/learn/Cpp_Program# g++ memCtrl.cpp -o memTest
root@se7en-LIFEBOOK-LH531:~/learn/Cpp_Program# ./memTest 
I am sorry!
root@se7en-LIFEBOOK-LH531:~/learn/Cpp_Program# 

　在這裏ｎｅｗ和ｄｅｌｅｔｅ是運行符,其性質和Ｃ中的ｓｉｚｅｏｆ()等同.

　當new動態生成對象數組時,調用delete釋放的時候,需要加上"[]".如下:

pa1=new  A[3];
..... 
delete  [ ]pa1;