C++ Programming: From Problem Analysis to Program Design
8th Edition
ISBN: 9781337102087
Author: D. S. Malik
Publisher: Cengage Learning
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Chapter 3, Problem 12SA
What is the output of the following program? (2, 3, 6, 8)
#include <iostream>
#include <cmath>
#include <string>
#include <iomanip>
using namespace std;
int main()
{
double x, y;
string str;
x = 9.0;
y = 3.2;
cout << fixed << showpoint << setprecision (2);
cout << x << "^" << y << " = " << pow(x, y) << endl;
cout << "5.0^2.5 = " << pow(5.0, 2.5) << endl;
cout << "sqrt (48.35) = " << sqrt (48.35) << endl;
cout << "static_cast<int>(sqrt(pow (y, 4))) = "
<< static_cast<int>(sqrt(pow (y, 4))) << endl;
str = "Predefined functions simplify
cout << "Length of str = " << str.length() << endl;
return 0;
}
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Question:
Trace and comment each and every line of the C++ program below ;
#include <iostream>
using namespace std;
int binarySearch(int arr[], int left, int right, int num)
{
if (right >= left) {
int mid = left + (right - left) / 2;
if (arr[mid] == num)
return mid;
if (arr[mid] > num)
return binarySearch(arr, left, mid - 1, num);
return binarySearch(arr, mid + 1, right, num);
}
return -1;
}
int main(void)
{
int arr[] = { 2, 3, 4, 8, 10, 40 };
int check = 40;
int n = sizeof(arr) / sizeof(arr[0]);
int result = binarySearch(arr, 0, n - 1, check);
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Chapter 3 Solutions
C++ Programming: From Problem Analysis to Program Design
Ch. 3 - Mark the following statements as true or false. An...Ch. 3 - Prob. 7SACh. 3 - What does function sqrt do? Which header file must...Ch. 3 - Prob. 9SACh. 3 - Prob. 10SACh. 3 - 11. What is the purpose of the manipulator setw?...Ch. 3 - 12. What is the output of the following program?...Ch. 3 - Prob. 13SACh. 3 - Suppose that name is variable of type string. What...Ch. 3 - 16. Write a C++ statement that uses the...
Ch. 3 - 19. The following program is supposed to read the...Ch. 3 - Prob. 20SACh. 3 - Prob. 21SACh. 3 - 22. Suppose that infile is an ifstream variable...Ch. 3 - 24. Suppose that infile is an 18stream variable...Ch. 3 - 1. Consider the following incomplete C++ program:...Ch. 3 - 2. Consider the following program in which the...Ch. 3 - Write a program that prompts the user to enter the...Ch. 3 - 4. During each summer, John and Jessica grow...Ch. 3 - 5. Three employees in a company are up for a...Ch. 3 - 6. Write a program that accepts as input the mass,...Ch. 3 - Interest on a credit card's unpaid balance is...Ch. 3 - Prob. 8PECh. 3 - Dairy Farm decided to ship milk in containers in...Ch. 3 - 10. Paula and Danny want to plant evergreen trees...
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