Problem 1
Fill in the blanks in each of the following: a. A(n)__________is a collection of related variables under one name. b. The bits in the result of an expression using the__________operator are set to one if the corresponding bits in each operand are set to one. Otherwise, the bits are set to zero. c. The variables declared in a structure definition are called its__________. d. The bits in the result of an expression using the__________operator are set to one if at least one of the corresponding bits in either operand is set to one. Otherwise, the bits are set to zero. e. Keyword__________introduces a structure declaration. f. Keyword__________is used to create a synonym for a previously defined data type. g. Each bit in the result of an expression using the__________operator is set to one if exactly one of the corresponding bits in either operand is set to one. Otherwise, the bit is set to zero. h. The bitwise AND operator & is often used to__________bits (i.e., to select certain bits from a bit string while zeroing others). i. A structure member is accessed with either operator__________or__________. j. The__________and__________operators are used to shift the bits of a value to the left or to the right, respectively.
Problem 2
State whether each of the following is true or false. If \(f a / s e\), explain why. a. Structures may contain only one data type. b. Members of different structures must have unique names. c. Keyword typedef is used to define new data types. d. Structures are always passed to functions by reference.
Problem 3
Write a single statement or a set of statements to accomplish each of the following: a. Define a structure called part containing int variable partNumber and char array partName, whose values may be as long as 25 characters. b. Define partptr to be a synonym for the type Part *. c. Use separate statements to declare variable a to be of type Part, array b [ 10 ] to be of type part and variable ptr to be of type pointer to Part. d. Read a part number and a part name from the keyboard into the members of variable a. e. Assign the member values of variable a to element three of array b. f. Assign the address of array b to the pointer variable ptr. g. Print the member values of element three of array b, using the variable ptr and the structure pointer operator to refer to the members.
Problem 4
Find the error in each of the following: a. Assume that struct Card has been defined as containing two pointers to type charnamely, face and suit. Also, the variable c has been declared to be of type Card, and the variable cPtr has been declared to be of type pointer to Card. Variable cPtr has been assigned the address of c. cout << *cPtr.face << endl; b. Assume that struct Card has been defined as containing two pointers to type charnamely, face and suit. Also, the array hearts[ 13 ] has been declared to be of type Card. The following statement should print the member face of element 10 of the array. cout << hearts.face << endl; c. struct Person { char lastName[ 15 ]; char firstName[ 15 ]; int age; } d. Assume that variable p has been declared as type Person and that variable c has been declared as type Card. p = c;
Problem 6
Provide the definition for each of the following structures: a. Structure Inventory, containing character array partName[ \(3 \theta\) ], integer partNumber, floating-point price, integer stock and integer reorder. b. A structure called Address that contains character arrays streetAddress [ 25 1, city[ 20 1, state[ 3 ] and zipcode[ 6 ]. c. Structure student, containing arrays firstName[ 15 ] and lastName[ 15 ] and variable homeAddress of type struct Address from part (b). d. Structure Test, containing 16 bit fields with widths of 1 bit. The names of the bit fields are the letters a to p.
Problem 7
Consider the following structure definitions and variable declarations: struct Customer { char lastName[ 15 ]; char firstName[ 15 ]; int customerNumber; struct { char phoneNumber[ 11 ]; char address[ 50 ]; char city[ 15 ]; char state[ 3 ]; char zipCode[ 6 ]; } personal; } customerRecord, *customerPtr; customerPtr = &customerRecord Write a separate expression that accesses the structure members in each of the following parts: a. Member lastName of structure customerRecord. b. Member lastName of the structure pointed to by customerPtr. c. Member firstName of structure customerRecord. d. Member firstname of the structure pointed to by customerPtr. e. Member customerNumber of structure customerRecord. f. Member customerNumber of the structure pointed to by customerPtr. g. Member phoneNumber of member personal of structure customerRecord. h. Member phoneNumber of member personal of the structure pointed to by customerPtr. i. Member address of member personal of structure customerRecord. j. Member address of member personal of the structure pointed to by customerPtr. k. Member city of member personal of structure customerRecord. I. Member city of member personal of the structure pointed to by customerPtr. m. Member state of member personal of structure customerRecord. n. Member state of member personal of the structure pointed to by customerPtr. 0\. Member zipcode of member personal of structure customerRecord. p. Member zipcode of member personal of the structure pointed to by customerPtr.
Problem 9
Write a program that right-shifts an integer variable 4 bits. The program should print the integer in bits before and after the shift operation. Does your system place zeros or ones in the vacated bits?
Problem 10
Left-shifting an unsigned integer by 1 bit is equivalent to multiplying the value by 2. Write function power 2 that takes two integer arguments, number and pow, and calculates number \(* 2\) pow Use a shift operator to calculate the result. The program should print the values as integers and as bits.
Problem 11
The left-shift operator can be used to pack two character values into a twobyte unsigned integer variable. Write a program that inputs two characters from the keyboard and passes them to function packCharacters. To pack two characters into an unsigned integer variable, assign the first character to the unsigned variable, shift the unsigned variable left by 8 bit positions and combine the unsigned variable with the second character using the bitwise inclusive-OR operator. The program should output the characters in their bit format before and after they are packed into the unsigned integer to prove that they are in fact packed correctly in the unsigned variable.
Problem 15
Write a program that reverses the order of the bits in an unsigned integer value. The program should input the value from the user and call function reverseBits to print the bits in reverse order. Print the value in bits both before and after the bits are reversed to confirm that the bits are reversed properly.
