chapter7_6e

TRUE/FALSE1.The indexed variables (members) of an array must be integers.ANSWER: FALSE2.The locations of the various indexed variables in an array can be spread out allover the memory.ANSWER: FALSE3.The following array declaration is legaldouble scores[]={0.1,0.2,0.3};ANSWER: true4.Arrays can be passed to functions.ANSWER: TRUE5.Arrays can be returned from a function.ANSWER: FALSE6.If a function is expecting a pass by reference parameter, you can pass an indexvariable from an array of the same base type to that function.ANSWER: TRUE7.When you have a function that expects an array, it should also expect the size ofthe array or the number of indexed variables with valid data.ANSWER: TRUE8.The following function declaration guarantees the values in the array argumentare not changed.void function1(int array[], int numElements);ANSWER: FALSE9.The following function will work with any size integer array.void function1(int array[], int numElements);ANSWER: TRUE10.If you use the const modifier in a function declaration, you do not include it in thefunction definition.ANSWER: FALSEShort Answer1.Write the code to declare a two dimension array of integers with 10 rows and 20columns.ANSWER: int array[10][20];2.Write the code to declare an array of 10 doubles named list;ANSWER: double list[10];3.The modifier that guarantees that an array argument will not be changed is called______.ANSWER: const4.How many indexed variables does the following array have?int myArray[]={1,2,3,6,5,4,7,1,2};ANSWER: 95.How many indexed variables does the following array have?int myArray[12]={1,2,3,6,5,4,7,1,2};ANSWER: 126.Write the declaration for a function named funct1 that expects an array of floats,the number of elements in the array and does not return any value.ANSWER: void funct1(float myArray[], int numElements);7.If you put a value in the square brackets of a one-dimension array parameter, thisvalue is _________ by the compiler.ANSWER: ignored8.If your index used to access the indexed variables of the array has the value o f anon-existent index, this is called _________ANSWER: Index out of range, Index out of bounds, or illegal.9.The computer remembers the address of which indexed variable(s) in an array?______ANSWER: the first10.A computer's memory consists of numbered locations called __________.ANSWER: bytes11.In the expressiondouble score[10];double is called the ___________ of the arrayANSWER: base type12.In the expressioncout << score[i] << endl;i is called theANSWER: index or subscript13.An _______ is used to process a collection of data all of which is the same typeANSWER: array14.The individual variables that comprise an array are called __________ANSWER: indexed variables, subscripted variables, or elements.15.Indexes are numbered starting at _________ANSWER: 0Multiple Choice1.What are the valid indexes for the array shown below?int myArray[25];a.0-25b.0-24c.1-25d.1-24ANSWER: B2.What is wrong with the following code?float scores[10], total;a.Cannot declare regular and array variables together.b.Arrays must be integersc.The 10 should be replaced with a variable name, whose value is inputfrom the userd.Nothing.ANSWER: D3.Given an array named scores with 25 elements, what is the correct way to accessthe 25th element?a.scores+25b.scores[24]c.scores[25]d.scores[last]ANSWER: B4.Why should you use a named constant for the size of an array?a.Readability of codeb.Makes changes to the program easierc.Helps reduce logic errorsd.All of the aboveANSWER: D5.Given an array of integers of size 5, how does the computer know where the 3rdindexed variable is located?a.It adds 3 to the base address of the arrayb.It adds space for 3 integers to the base address of the arrayc.It remembers where all the indexed variables of the array are located.d.None of the aboveANSWER: B6.What is wrong with the following code fragment?const int SIZE =5;float scores[SIZE];for(int i=0; i<=SIZE;i++){cout << "Enter a score\n";cin >> scores[i];}a.Array indexes start at 1 not 0b.Arrays must be integersc.Array indexes must be less than the size of the arrayd.Should be cin >> scores[0];ANSWER: C7.Which of the following declare an array of 5 characters, and initializes them tosome known values?a.char array[5]={'a','b','c','d','e'};b.char array[4]={'a','b','c','d','e'};c.char array[5]={''};d.char array[]={'a','b','d','e'};e. A and Cf. B and Dg.all of the aboveANSWER: E8.If you declare and initialize an integer array of size 10, but only list 5 values, whatvalues are stored in the remaining 5 indexed variables?a.0b.garbagec.0.0d.'0'ANSWER: A9.Arrays are always passed to a function usinga.pass by valueb.pass by referencec.pass by arrayd.you cannot pass arrays to a functionANSWER: C10.Give the following declarations, which of the following is a legal call to thisfunction?int myFunction(int myValue);int myArray[1000];a.cout << myFunction(myArray);b.cout << myFunction(myArray[0]);c.myArray = myFunction(myArray);d.myArray[1] = myFunction(myArray[0]);e. A and Bf. A and Cg. B and DANSWER: G11.Which of the following function declarations correctly expect an array as the firstargument?a.void f1(int array, int size);b.void f1(int& array, int size);c.void f1(int array[100], int size);d.void f1(float array[], int size);e.All of the abovef. C and Dg. A and BANSWER: F12.Which of the following function declarations correctly guarantee that the functionwill not change any values in the array argument?a.void f1(int array[], int size) const;b.void f1(int array[], int size);c.void f1(int &array, int size);d.void f1(const int array[], int size);e.void f1(int array[], const int size);ANSWER: D13.The following function definition has an error in it. What line is this error on?0. void f1(const double array[], int size)1. {2. int i=0;3. while(i< size)4. {5. array[i] += 2;6. cout <<array[i];7. i++;8. }9. }a.0b. 2c. 5d. 6e. 2ANSWER: C14.Which of the following function declarations could be used to input data from thekeyboard into the array?a.void input(int array[], int &numElements, int MAX_SIZE);b.void input(int array[], int numElements, int MAX_SIZE);c.void input(int &array[], int numElements, int MAX_SIZE);d.int array[] input(int array[], int &numElements, int MAX_SIZE);ANSWER: A15.If we want a search function to search an array for some value and return eitherthe index where the value was found, or -1 if not found, which of the following prototypes would be appropriate?a.void search(const int array, int target, int numElements);b.void search(const int array, int target);c.int search(const int array[], int numElements);d.int search(const int array[], int target, int numElements);ANSWER: D16.Given the following function definition for a search function, and the followingvariable declarations, which of the following are appropriate function invocations?const int SIZE=1000;int search(const int array[], int target, int numElements);int array[SIZE], target, numberOfElements;a.search(array[0], target, numberOfElements);b.result=search(array[0], target, numberOfElements);c.result=search(array, target, numberOfElements);d.result=search(array, target, SIZE);ANSWER: C17.Given the following function definition, will repeated calls to the search functionfor the same target find all occurrences of that target in the array?int search(const int array[], int target, int numElements){int index=0;bool found=false;while((!found) && (index < numElements)){if(array[index] == target)found=true;elseindex++;}if(found==true)return index;elsereturn -1;}a.Yesb.Noc.Impossible to tell without looking at the values of the arrayd.It depends on the value of target.ANSWER: B18.Given the following function definition, what modifications need to be made tothe search function so that it finds all occurrences of target in the array?int search(const int array[], int target, int numElements){int index=0;bool found=false;while((!found) && (index < numElements)){if(array[index] == target)found=true;elseindex++;}if(found==true)return index;elsereturn -1;}a.Add another parameter to indicate where to stop searchingb.Add another parameter to indicate where to start searchingc.This already can find all occurrences of a given targetd.Have the function return the whole arrayANSWER: B19.Which sort algorithm does the following outline define?for i between 0 and number_used-1 inclusiveput the ith smallest element at array[i]a.sequentialb.selectionc.bubbled.swapANSWER:B20.Given the following class and array declaration, how would you print out the ageof the 10th person in the array?class personClass{public:void setAge(int newAge);void setGender( char newGender);void setSalary(float newSalary);int getAge();char getGender();float getSalary();private:int age;char gender;float salary;};personClass people[100];a.cout << people[10];b.cout << people[9];c.cout << people[9].age;d.cout << people[9].getAge();ANSWER: D21.Which of the following array declarations are legal?a.int array[10];b.int size;cin >> size;int array[size];c.int array[]={0,0,0};d.const int size=9;int array[size];e.All of the abovef.All but Cg.All but BANSWER: G22.Which of the following function declarations will accept the following two-dimension array?int pages[10][30];a.void f1(int pages[][], int size);b.void f1(int pages[][30], int size);c.void f1(int pages[10][], int size);d.void f1(int& pages, int size);ANSWER: B23.If you need a function that will handle multi-dimensional arrays, you must specifythe following sizes inside the square brackets.a.All the sizesb.All sizes except the last dimensionc.All sizes except the first dimensiond.None of the sizesANSWER: C24.What is the output of the following code fragment?int array[4][4], index1, index2;for(index1=0;index1<4;index1++)for(index2=0;index2<4;index2++)array[index1][index2]=index1 + index2;for(index1=0;index1<4;index1++){for(index2=0;index2<4;index2++)cout << array[index1][index2] << " ";cout << endl;}a.0 1 2 31 2 3 42 3 4 53 4 5 6b.0 1 2 30 1 2 30 1 2 30 1 2 3c.0 0 0 01 1 1 12 2 2 23 3 3 3d.0 0 0 00 1 2 30 2 4 60 3 6 9ANSWER: A25.Which of the following correctly declare an array that can hold up to 3 rows of 5columns of doubles?a.int array[3],[5];b.int array[3][5];c.float array[3][5];d.float array[3,5];ANSWER: C26.Which of the following function declarations can be passed the following array?char myArray[6][8];a.void f1(char a[][], int sizeOfFirst);b.void f1(char a[][8], int sizeOfFirst);c.void f1(char& a, int sizeOfFirst);d.void f1(char a[6][8], int sizeOfFirst);e. B and Df. A and DANSWER: E27.A two dimension array can also be thought of asa. a tableb.an array of arraysc. a filed.none of the abovee. A and Cf. A and BANSWER: F28.Which of the following statements are true?a.Array elements may be user-defined types (structs or classes)b.If a function is expecting a variable of the base type of the array, then youcan pass an element of the array to the function.c.All of the above.d.None of the above.ANSWER: C29.Which of the following will correctly assign all the values in one array to theother array? (Assume both arrays are of the same type and have SIZE elements)a.array1=array2;b.array1[]=array2;c.for(i=0;i<SIZE;i++)array1[i]=array2[i];d.for(i=0;i<SIZE;i++)array1[]=array2[];ANSWER: C30.Which of the following will read values from the keyboard into the array?(Assume the size of the array is SIZE).a.cin >> array;b.cin >> array[];c.cin >> array[SIZE];d.for(i=0;i<SIZE;i++)cin >> array[i]; ANSWER: D。