Question

find the errors
each of the following programs has errors. find as many as you can.

1. // this program averages 3 test scores.

// it uses the variable perfectscore as a flag.
include <iostream>
using namespace std;
int main()
{
cout << \enter your 3 test scores and i will \;
<< \average them:\;
int score1, score2, score3;
cin >> score1 >> score2 >> score3;
double average;
average = (score1 + score2 + score3) / 3.0;
if (average = 100);
perfectscore = true; // set the flag variable
cout << \your average is \ << average << endl;
bool perfectscore;
if (perfectscore);
{
cout << \congratulations!\
\;
cout << \thats a perfect score.\
\;
cout << \you deserve a pat on the back!\
\;
return 0;
}
}

Explanation:

Step1: Pre - processor directive error

The include statement should be #include <iostream> with a # at the start.

Step2: Variable declaration and usage error

The variable perfectScore is used before it is declared in the if (average = 100); line.

Step3: Assignment vs comparison error

In if (average = 100);, the single equal sign (=) is an assignment operator. It should be == for comparison.

Step4: Semicolon after if block error

The semicolon after if (average == 100); and if (perfectScore); makes the if statements have an empty body, and the subsequent code blocks are not part of the if logic as intended.

Answer:

1. include <iostream> should be #include <iostream>.
2. perfectScore is used before declaration.
3. if (average = 100); should be if (average == 100).
4. Unnecessary semicolons after if statements (if (average == 100); and if (perfectScore);).