main.cpp

来自「对于c++primer中前面几章的练习以及书上的例子」· C++ 代码 · 共 48 行

#include <cstdlib>
#include <iostream>

using namespace std;

int main(int argc, char *argv[])
{
    //3.19 
   /* int ival=1;
    //int &rval1=1.01;这样的赋值不正确 
    int &rval1=ival;
    cout<<&rval1<<endl; //&rval返回的是地址 
    cout<<rval1<<endl; 
    
   // int &rval3=&ival; 
    int *pi=&ival;
    cout<<*pi<<endl;
    int &rval4=*pi; 
    cout<<rval4<<endl; 
    
    int *prval1=pi;
    //int &*prval1=pi; 
    cout<<*prval1<<endl; 
    const int &ival2=1;
    //const int &*prval2=&ival; */
    
    //3.20 
    /*double rval1=2.14159;
    double prval2=0.12;
    double prval1=prval2; 
    cout<<prval1<<endl; 
    
    prval2=rval1;
    cout<<prval2<<endl;
    //double *prval2=rval1; */
    
    //3.21 
    int ival=0;
    const int *pi=0;
    const int &ri=0; 
    pi=&ival;
    cout<<*pi<<endl; 
    //ri=&ival;
   // pi=&rval; 
    system("PAUSE");
    return EXIT_SUCCESS;
}