Question

Write a C++ statement that prints the message "The number is valid." if the variable temperature is within the range -50 through 150.

Short answer

Question: Write a C++ statement that checks if the value of a variable 'temperature' is within the range -50 through 150 and prints "The number is valid." if the condition is satisfied. Answer: ```if (temperature >= -50 && temperature <= 150) { std::cout << "The number is valid." << std::endl; }```

Step-by-step solution

Check the range

To verify if the value of the variable 'temperature' is within the range -50 through 150, use an if statement with a logical condition that checks if the value is greater than or equal to -50 and less than or equal to 150: ```cpp if (temperature >= -50 && temperature <= 150) ```

Print the message

If the condition in the if statement is satisfied, meaning that the value of the 'temperature' variable is within the given range, use a 'std::cout' statement inside the if statement block to print the message "The number is valid.": ```cpp std::cout << "The number is valid." << std::endl; ```

Final Solution

Putting the steps together, the final C++ code should look like this: ```cpp if (temperature >= -50 && temperature <= 150) { std::cout << "The number is valid." << std::endl; } ```