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#include <iostream> using namespace std; int main() { int gradePoint; // Input the grade point cout << "Enter the grade point (0-4): "; cin >> gradePoint; // Determine the letter grade using a switch statement switch (gradePoint) { case 4: cout << "The letter grade is A." << endl; break; case 3: cout << "The letter grade is B." << endl; break; case 2: cout << "The letter grade is C." << endl; break; case 1: cout << "The letter grade is D." << endl; break; case 0: cout << "The letter grade is F." << endl; break; default: cout << "Invalid grade point! Please enter a number between 0 and 4." << endl; break; } return 0; } |
Explanation:
- Input:
- The program prompts the user to enter a grade point between 0 and 4.
- Switch Statement:
- The
switchstatement checks the value ofgradePoint. - Each
casecorresponds to a specific letter grade:case 4: Outputs “A.”case 3: Outputs “B.”case 2: Outputs “C.”case 1: Outputs “D.”case 0: Outputs “F.”
- The
defaultcase handles any input outside the range of 0-4, displaying an error message.
- The
- Output:
- Depending on the input, the program prints the corresponding letter grade.
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Example Outputs:
Example 1: Valid Input
Input:
- Grade Point:
4
Output:
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Enter the grade point (0-4): 4 The letter grade is A. |
Example 2: Valid Input
Input:
- Grade Point:
2
Output:
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Enter the grade point (0-4): 2 The letter grade is C. |
Example 3: Invalid Input
Input:
- Grade Point:
5
Output:
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Enter the grade point (0-4): 5 Invalid grade point! Please enter a number between 0 and 4. |