问题描述
classInvest{publicstaticvoidmain(String[]arguments){floattotal=14000;System.out.println("Originalinvestment:$"+total);//Inceasesby40percentthefirstyeartotal=total+(total*.4F);System.out.println("Afteroneyear:$"+total);//Loses$1,500thesecondyeartotal=total-1500F;System.out.println("Aftertwoyears:$"+total);//Increasesby12percentthethirdyeartotal=total+(total*.12F);System.out.println("Afterthreeyears:$"+total);}}新手自学中。。。请问total=total+(total*.4F);语句中的.4F是浮点型常量的意思吗?total=total-1500F;语句中只有将1500这个常量定义成浮点型,才可以和浮点型的total进行运算是么?同类型的才可以进行运算,如果是total=total-1500I;这样就是错误的吗?
时间: 2024-08-03 10:31:14