字符串逆序的delete和不delete

Question

char* StrRsever(char *pStr)
{
size_t uiLen = strlen(pStr);
char *strarry1 = new char[uiLen+1];
size_t i = 0;
for (i = 0; i < uiLen; i++)
{
*(strarry1 + i) = *(pStr + uiLen - i - 1);

}
*(strarry1 + i) = 0;
pStr = strarry1;
delete strarry1; //为什么delete这个报错,不delete就没事？
return pStr;
}

Answer 1

pStr = strarry1;
delete strarry1; //为什么delete这个报错,不delete就没事？
return pStr;

你的pStr指向的strarry1的空间，同时函数返回出去给外面的调用，你delete释放掉。会导致后面访问出错。你应该再加一个函数deleteresource等来delete strarry1;
当外面的调用者确定不需要StrRsever返回的指针的时候调用deleteresource函数