C++ How to Program, 10/e

... // error: cannot modify a const object
16   }

GNU C++ compiler error message:

fig08_10.cpp: In function ‘void f(const int*)’:
fig08_10.cpp:17:12: error: assignment of read-only location ‘* xPtr’

When a function is called with a built-in array as an argument, its contents are effectively passed by reference because the built-in array’s name is implicitly convertible to the address of the built-in array’s first element. However, by default, objects such as arrays and vectors are passed by value—a copy of the entire object is passed. This requires the execution-time overhead of making a copy of each data item in the object and storing it on the function-call stack. When a pointer to an object is passed, only a copy of the address of the object must ...