도서의 코딩노트

void main() { // variable var name = "Doseo"; print(name); var name2 = "Lee"; print(name2); name = "Flutter"; print(name); }void main() { // Int int number1 = 10; print(number1); int number2 = 15; print(number2); int number3 = -20; print(number3); print(number1 + number2); print(number1 - number2); print(number1 / number2); print(number1 * number2..