04.2 Dart算术运算符

void main(){
  int a=13;
  int b=5;

  print(a+b);   //加
  print(a-b);   //减
  print(a*b);   //乘
  print(a/b);   //除
  print(a%b);   //其余
  print(a~/b);  //取整

  var c=a*b;
  print('--------');
  print(c);
}