Chapter 5: Problem 66

Each of the following programs has errors. Find as many as you can. // This program adds two numbers entered by the user.

Short Answer

Expert verified

Question: Analyze the given exercise, identify errors, provide a proper explanation addressing the issues, and suggest the correct code that can achieve the intended purpose of adding two user-input numbers. Answer: The corrected program is written in C++ and involves using the 'iostream' library to perform input/output operations. The code first includes the 'iostream' library, declares and initializes variables with appropriate data types, and gets user input using 'cin'. Then, it adds the input numbers, stores the result in a variable, and displays the output using 'cout'. The complete code is provided in the solution.

Step by step solution

Determine the programming language

This exercise seems to be an intended C++, C, or JavaScript program, considering the "//" used for comments and the description to add two numbers entered by the user. Since there is no actual code provided (only the comment line), we will assume it is a C++ program and show the correct implementation of the addition of two numbers entered by the user. 2.

Setup and include necessary libraries

Before writing the code, include the appropriate libraries needed for the input/output and other operations in the C++ program. In this case, we need the 'iostream' library for input/output operations. ```cpp #include ``` 3.

Declare and initialize variables

Now, declare and initialize variables that will store the user input (two numbers) and the result of their addition. We'll use 'double' as a data type to allow for decimal inputs. ```cpp double num1 = 0.0, num2 = 0.0, result = 0.0; ``` 4.

Get user input

To get input from the user for the two numbers, use the 'cin' operator from the 'iostream' library. ```cpp std::cout << "Enter the first number: "; std::cin >> num1; std::cout << "Enter the second number: "; std::cin >> num2; ``` 5.

# Perform the addition

Add the two input numbers and store the result in the 'result' variable. ```cpp result = num1 + num2; ``` 6.

Display the output

Finally, display the result to the user using the 'cout' operator from the 'iostream' library. ```cpp std::cout << "The sum of the numbers is: " << result << std::endl; ``` The corrected program in its entirety: ```cpp #include int main() { double num1 = 0.0, num2 = 0.0, result = 0.0; std::cout << "Enter the first number: "; std::cin >> num1; std::cout << "Enter the second number: "; std::cin >> num2; result = num1 + num2; std::cout << "The sum of the numbers is: " << result << std::endl; return 0; } ```

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Each of the following programs has errors. Find as many as you can. // This program adds two numbers entered by the user.

Short Answer

Step by step solution

Determine the programming language

Setup and include necessary libraries

Declare and initialize variables

Get user input

# Perform the addition

Display the output

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