SYTYCD-TypeScript.ts

// A small program that checks student grades and gives feedback

function calculateAverage(grades: number[]): number {
    let total = 0
    for (let i = 0; i <= grades.length; i++) {
        total += grades[i]
    }
    return total / grades.length
}

function giveFeedback(name: string, average: number) {
    if (average = 100) {
        console.log(name + " is a genius!")
    } else if (average > 90) {
        console.log(name + " did excellent work.")
    } else if (average > 75 && average < 90) {
        console.log(name + " did well.")
    } else {
        console.log(name + " needs to improve.")
    }
}

const students = [
    { name: "Ali", grades: [100, 95, 90] },
    { name: "Sara", grades: [70, 60, 50] },
    { name: "Omar", grades: [85, 80, "75"] },
    { name: "Lina", grades: [null, 100, 90] }
]

for (let student of students) {
    const avg = calculateAverage(student.grade)
    giveFeedback(student.name, avg)
}