cout variables difference from c language

Question

When I've learnt C in uni, we always used printf("sum equals to &var"); and refer to the variables in memory with &, like a pointer.
My question is, is there any way to use string and variables in the same "cout"? for example: cout << "Answer is &var"; or its always two separate?

Answer 1

int a=10, b=20;
int c = a+b;

In C we write
printf ("Sum = %d\n",c);

whereas in C++, it is written as
cout <<"Sum = " <<c<<endl;