Solutions - Exercise Solutions Chapter 1 1. a. true; b....

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Unformatted text preview: Exercise Solutions Chapter 1 1. a. true; b. false; c. false; d. false; e. false; f. true; g. false; h. false 2. Precondition: The value of x must be nonnegative. Postcondition: If the value of x is nonnegative, the function returns the positive square root of x ; otherwise, the program terminates. 3. a. O ( n 2 ) b. O ( n 3 ) c. O ( n 3 ) d. O ( n ) 4. 12 5. a. 43 b. 4 n + 3 c. O ( n ) 6. -51, -50, -49, -1, 0, 1, 49, 50, 51 7. #define NDEBUG 8. a. int sumSquares(int n) { int sum = 0; for(int j = 1; j <= n; j++) sum = sum + j * j; return sum; } b. This function is of the order O ( n ). 9. The black-box refers to testing the correctness of the program; that is, making sure that the program does what it is supposed to do. In black-box testing, you do not know the internal working of the algorithm or function. You know only what the function does. Black-box testing is based on inputs and outputs. 10. The white-box refers to testing the correctness of the program; that is, making sure that the program does what it is supposed to do. White-box testing relies on the internal structure and implementation of a function or algorithm. The objective is to ensure that every part of the function or algorithm is executed at least once. 11. a. Constructors have no type. Therefore, the statement: int AA(int, int); should be : 1 AA(int, int); b. Missing semicolon after } . c. There should be a : after the member access specifier public . (Replace ; with : after the label public .) 12. a. 6 b. 2 c. 2 d d. e void xClass::func() { u = 10; v = 15.3; } f e. g void xClass::print() { cout<<u<<" "<<v<<endl; } h f. xClass::xClass() { u = 0; v = 0; } g. x.print(); h. xCalss t(20, 35.0); 13. a. (i) Constructor at Line 1 (ii) Constructor at Line 3 (iii) Constructor at Line 4 b. CC::CC() { u = 0; v = 0; } c. CC::CC(int x) { u = x; v = 0; } d. CC::CC(int x, int y) { u = x; v = y; } CC::CC(double x, int y) 2 { u = y; v = x; } 14. a. int testClass::sum() { return x + y; } void testClass::print() const { cout<<"x = "<<x<<", y = "<<y<<endl; } testClass::testClass() { x = 0; y = 0; } testClass::testClass(int a, int b) { x = a; y = b; } b. (One possible solution. We assume that the name of the header file containing the definition of the class testClass is Exercise14Ch1.h.) #include <iostream> #include "Exercise5Ch1.h" using namespace std; int main() { testClass one; testClass two(4,5); one.print(); two.print(); return 0; } 3 Chapter 2 1. a. true; b. true; c. true; d. false; e. false; f. true; g. true; h. false; i. false; j. true; k. false; l. true; m. false; n. false 2. 3. Some of the data members that can be added to the class employeeType are: department, salary, employeeCategory (such as supervisor and president), and employeeID . Some the member functions are: setInfo , getSalary , getEmployeeCategory , and setSalary ....
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Solutions - Exercise Solutions Chapter 1 1. a. true; b....

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