Question

What is wrong with the following code and how would you fix it? Fix the code and use a comment to describe what you fixed. Do not copy and paste this code into Visual Studio - it will not work. Submit your fixed code and a screenshot of the running program. Take the screenshot when this program has been provided a value of 15 for the age.

#include
using namespace std;
int main()
{
cout << "Please enter your age: ";
int age;
cin >> age;
switch(age)
{
case 13:
case 14:
case 15:
case 16:
case 17:
case 18:
case 19:
cout << "You are a teenager" << endl;
default:
cout << "You are NOT a teenager" << endl;
}
}

Answer 1

The provided C++ code snippet had errors that were corrected by adding a break statement to prevent fall-through in the switch statement and including a return 0 statement at the end of the main function.

Step-by-step explanation:

The provided code snippet has a few errors that need correction for it to compile and run properly. Here is the corrected version of the code with comments explaining the fixes:

#include
using namespace std;
int main() {
cout << "Please enter your age: ";
int age;
cin >> age;
switch(age) {
case 13:
case 14:
case 15:
case 16:
case 17:
case 18:
case 19:
cout << "You are a teenager" << endl;
break; // Added a break statement
default:
cout << "You are NOT a teenager" << endl;
}
return 0; // Added return statement
}

The first fix is the inclusion of the missing break statement after the last case before the default case in the switch statement. Without the break, the program would execute the code for the default case even if the case matches, leading to fall-through behavior.

The second fix is including the return 0 statement at the end of the main function. This explicitly states that the program has ended successfully and returns control to the operating system. Note that in modern C++ (since C++11), the 'return 0;' statement at the end of the main function can be omitted, as it will be implicitly inserted by the compiler.