main function
void
main()
Implementation
void main(){
int num = 100;
var result = convertPointToUnit(num);
var result2 = a.convertPointToUnit(num);
print(result); //打印结果为 1.00
print(result2); //打印结果为 2.00
int num2 = 100;
print(num2.moneyString);
//使用logger库定义的类
Logger logger = Logger('Demo');
logger.debug('这是debug信息');
//使用calculator库定义的方法
print(add(1, 2));
}