타입스크립트 숫자 타입 사용 방법

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let age: number = 30;
let price: number = 19900;
let discountRate: number = 0.15;

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let count: number = 10;
let temperature: number = 36.5;
let totalPrice: number = 25000;

console.log(count);
console.log(temperature);
console.log(totalPrice);

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let quantity: number = 5;

// 오류 예시
// quantity = "5";

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let decimal: number = 10;
let hex: number = 0xff;
let binary: number = 0b1010;
let octal: number = 0o744;

console.log(decimal); // 10
console.log(hex);     // 255
console.log(binary);  // 10
console.log(octal);   // 484

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function add(a: number, b: number): number {
  return a + b;
}

const result = add(10, 20);

console.log(result); // 30

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function calculateTotalPrice(price: number, quantity: number): number {
  return price * quantity;
}

const total = calculateTotalPrice(15000, 3);

console.log(total); // 45000

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type Product = {
  id: number;
  name: string;
  price: number;
  stock: number;
};

const product: Product = {
  id: 1,
  name: "무선 마우스",
  price: 29900,
  stock: 15,
};

console.log(product.price);

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const scores: number[] = [90, 85, 100, 70];

function getAverage(numbers: number[]): number {
  const total = numbers.reduce((sum, value) => sum + value, 0);
  return total / numbers.length;
}

console.log(getAverage(scores)); // 86.25

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const prices: Array<number> = [10000, 20000, 30000];

const totalPrice = prices.reduce((sum, price) => sum + price, 0);

console.log(totalPrice); // 60000

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