cout和printf

#include <iostream>
using namespace std;
int main()
{
    int i=0,j=0;
    cout<<i++<<"\t"<<i++<<"\t";
    cout<<i++<<endl;
    printf("j++\tj++\t");
    printf("j++\n");
    return 0;
}

#include <iostream>
using namespace std;
int hello1();
int hello2();
int main() 
{
    int a, b;
    cout<<"a="<<hello1()<<" b="<<hello2()<<endl;
    printf("a=%d    b=%d\n",hello1(),hello2());
    return 0;}
int hello1()
{
    cout<<"hello1"<<endl;
    return 1;
}
int hello2() 
{
    cout<<"hello2"<<endl;
    return 2;
}