Calculator

main.dart

void main() {
  Calculator calc = Calculator();

  int result = calc.add(6, 7);
  print(result);

  result = calc.sub(3, 5, 8);

  print(result);

  result = calc.mulitply(7, 3, 2);
  print(result);

  result = calc.modulus(7, 3);
  print(result);

  double result1 = calc.divide(7, 3);
  print(result1);

  List<int> resultList = calc.factor(70);
  print(resultList.join(','));

}

class Calculator {
  int add(int num1, int num2) {
    return num1 + num2;
  }

  int sub(int num1, int num2, int num3) {
    return num1 - num2 - num3;
  }

  int mulitply(int num1, int num2, int num3) {
    return num1 * num2 * num3;
  }

  int modulus(int num1, int num2) {
    return num1 % num2;
  }

  double divide(int num1, int num2) {
    return num1 / num2;
  }

  List<int> factor(int num1) {
    List<int> factors = [];
    for (int a = 1; a <= num1; a++) {
      int b = num1 % a;
      if (b == 0) {
        factors.add(a);
      }
    }
    return factors;
  }
}