C++ Projects

Example

// This function returns a letter grade based on the average of a student char gradeFunction(double avg) {
if (avg >= 90) return 'A';
else if (avg >= 80) return 'B';
else if (avg >= 70) return 'C';
else if (avg >= 60) return 'D';
else return 'F';
}
int main() {
 int count; // Number of grades the user wants to enter
 double sum = 0, grade;
 // Sum stores total grades, grade holds each input // Ask the user to enter total grades between 1 to 5 cout << "How many grades (1 to 5)? "; cin >> count; // Validate that count is between 1 and 5
 if (count < 1 || count > 5) {
 cout << "Invalid number. You must enter between 1 and 5 grades.\n";
 return 1; // Exit
 }
 // Loop to collect each grade
 for (int i = 1; i <= count; i++) {
 cout << "Enter grade " << i << ": ";
 cin >> grade;
 sum += grade;
 }
 // Calculate the average score double avg = sum / count;
 // Display numeric average
 cout << "Average: " << avg << "\n";
 // Display letter grade cout << "Letter grade: " << gradeFunction(avg) << "\n";
 return 0;
}