Exam 11: Arrays, Addresses, and Pointers

Pointers ____ be initialized when they are declared.

Access to an array using a subscript can always be replaced by an equivalent access using the array name as a pointer.

You can replace lines 5 and 6 in the following function with ____. 1 /* copy string2 to string1 */ 2 void strcopy(char string1[], char string2[]) 3 { 4 int i = 0; 5 while (string1[i] = string2[i]) 6 i++; 7 }

The following code is valid in C: char *message; strcpy(message,"abcdef");

A suitable equivalent to the function header calc(int pt[2][3]) is ____.

When working with pointers, the ____ tells the number of variables that are to be skipped over.

After creating two variables as follows: Char message1[81] = "this is a string"; Char *message2 = "this is a string"; The statement ____ is not valid in C.

One advantage of using subscripts for array processing is that they are more efficient than using pointers directly.

Offsets may be included in expressions using pointers.

The address stored in the array name cannot be changed by an assignment statement.

When adding or subtracting numbers to pointers, the computer automatically adjusts the number to ensure that the result still "points to" a value of the original data type.

In performing ____ on pointers, we must be careful to produce addresses that point to something meaningful.

The addresses in pointers can be compared using any of the relational operators (==, !=, <, >, etc.) that are valid for comparing other variables.

A pointer access can sometimes (but not always) be replaced using subscript notation.

If we store the address of grade[0] in a pointer named gPtr (using the assignment statement gPtr = &grade[0];), then, the expression ____ references grade[0].

Pointers are closely associated with array names.

int *ptNum = &miles; is ____.

Pointers, both as variables and function parameters, are used to store addresses.

Instead of initially creating a string as an array it is possible to create a string using a pointer.

The address operator in C is ____.