指针函数
#include <iostream>#include <string>
using std::cout ;
using std::endl ;
using std::string ;
int* newInt(int value);
double* newDouble(double value);
int main()
{
int* pInt = newInt(500);
double* pDouble = newDouble(33.33);
cout<<"*pInt = "<<*pInt <<endl; //正确，堆内存只有使用delete删除
cout<<"pDouble = "<<*pDouble<<endl; //错误，局部变量已经失效
delete pInt ;
pInt = NULL ;
return 0;
}
int* newInt(int value)
{
int* pInt = new int ;
*pInt = value ;
return pInt ;
}
double* newDouble(double value)
{
double num = value;
return &num ;
}
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