浅析C++中cout的运行机制

#include <iostream>
using namespace std;
int hello1();
int hello2();

int main()
{
    int a, b;
    cout<<"a="<<hello1()<<" b="<<hello2()<<endl;
    return 0;}

int hello1()
{
    cout<<"hello1"<<endl;
    return 1;
}
int hello2()
{
    cout<<"hello2"<<endl;
    return 2;
}

#include <iostream>
using namespace std;
int main()
{
    int b[2]={1,2};
    int *a=b;
    cout<<*a<<" "<<*(a++)<<endl;
    return 0;
}

#include <iostream>
using namespace std;
int main()
{
    int i=5;
    cout<<i<<" "<<(i++)<<" "<<(++i)<<endl;
    return 0;
}