Question

include ; using namespace std; main { double number, half; cout \(<<\) "Enter a number and I will divide it $\backslash n^{\prime \prime}\( cout \)<<$ "in ha… # A) # include ; using namespace std; main { double number, half; cout \(<<\) "Enter a number and I will divide it \(\backslash n^{\prime \prime}\) cout \(<<\) "in half for you. \(\backslash n^{\prime \prime}\) $\operatorname{cin} \quad>>$ number 1 half \(=/ 2\) } B) \(\quad\) #include \(<\) iostream \(>\) using namespace std; int main ( ) \\{ char name, go cout \(<<\) "Enter your name: \("\) cin \(.\) width (20) cin. getline \(>>\) name cout \(<<\) "Hi \("<<\) name \(<<\) endl cout "Press the ENTER key to end this program." \(\operatorname{cin} \quad>>\operatorname{gof}\) return 0 \(f\)

Short answer

Question: Break down the given C++ programs A) to divide a number by 2 and B) to get the user's name and display it, step by step. Answer: A) Program to divide a number by 2: 1. Include the iostream header and use the "std" namespace. 2. Declare the main function and variables 'number' and 'half'. 3. Display a console message for the user to input a number. 4. Take the input number from the user and store it in the 'number' variable. 5. Divide the 'number' variable by 2 and store the result in the 'half' variable. 6. Display the result using the 'cout' command and 'half' variable. B) Program to get user's name and display it: 1. Include the iostream header and use the "std" namespace. 2. Declare the main function with the 'int' return type and variables 'name' and 'go'. 3. Display a console message for the user to input their name. 4. Set the input width for 'name' to 20 characters and use the 'getline' function to get the user's name. 5. Display the user's name using the 'cout' command and the 'name' variable. 6. Ask the user to press the ENTER key to end the program and use the 'cin' command to proceed upon pressing ENTER. 7. Return 0 at the end of the main function.

Step-by-step solution

Include header files and use the standard namespace

Include the iostream header by typing "#include ". Use the "std" namespace by typing `using namespace std;`.

Declare main function and variables

Declare the main function with no specific return type by typing "main {". Declare two double variables, 'number' and 'half', in the same line by typing `double number, half;`.

Display console message for input number

End the line with the provided message "Enter a number and I will divide it" with the command `cout << "Enter a number and I will divide it\\n"`;

Take input number from the user

Use the 'cin' command to get the input number from the user and store it in the 'number' variable by typing `cin >> number;`.

Divide the number by 2

To find half of the number, divide 'number' by 2 and store the result in the 'half' variable by typing `half = number / 2;`.

Display the result

To display the result of the division, use the 'cout' command and type `cout << "The half of the number is: " << half << endl;`. B) Program to get user's name and display it:

Include header files and use the standard namespace

Include the iostream header by typing "#include ". Use the "std" namespace by typing `using namespace std;`.

Declare main function and variables

Declare the main function with the 'int' return type by typing "int main () {". Declare two char variables, 'name' and 'go', in the same line by typing `char name, go;`.

Display console message for input name

End the line with the provided message "Enter your name: $" with the command `cout << "Enter your name: ";`.

Set input width and get user's name

Set the input width for 'name' to 20 characters using `cin.width(20);`. Then, use 'getline' function to get the user's name by typing `cin.getline >> name;`.

Display the user's name

To display the user's name, use the 'cout' command and type `cout << "Hi " << name << endl;`.

Ask user to press ENTER key

To prompt the user to press the ENTER key to end the program, type `cout << "Press the ENTER key to end this program.";` and then use the 'cin' command to proceed the program upon pressing ENTER by typing `cin >> go;`.

Return 0 at the end of main function

As the main function has an 'int' return type, add the line `return 0;` before the closing brace of the main function.