Dart语言算术运算符

void main() { 
   var num1 = 101; 
   var num2 = 2; 
   var res = 0; 
   res = num1+num2; 
   print("Addition: ${res}"); 
   res = num1-num2;
   print("Subtraction: ${res}"); 
   res = num1*num2; 
   print("Multiplication: ${res}"); 
   res = num1/num2; 
   print("Division: ${res}"); 
   res = num1~/num2; 
   print("Division returning Integer: ${res}"); 
   res = num1%num2; 
   print("Remainder: ${res}"); 
   num1++; 
   print("Increment: ${num1}"); 
   num2--; 
   print("Decrement: ${num2}"); 
}