graduation

function graduation(input) {
    let name = input.shift();
    let counter = 1;
    let sum = 0;
    while (counter <= 12) {
        let grade = Number(input.shift());
        if (grade >= 4.00) {
            sum += grade;
            counter++;
        }
    }
    let average = sum / 12;
    console.log(`${name} graduated. Average grade: ${average.toFixed(2)}`);
}