使用模数/ fmod和if语句c ++

Question

问题：你有1.45美元我们怎样才能输出这个是多少分之三和一角钱

产量应为5季度2角钱1镍。

double amount = 1.45
double quarter = .25
double dime = .10
double nickel = .05
if(fmod (amount,quarter) == 0)
cout << "your change is"<< amount/quarter << " quarters" ;

Answer 1

转换为美分（使用int算术得分，因为它是离散值）为1.45 * 100然后

int quarters = 145 / 25;
int dimes = ( 145 - quarters * 25 ) / 10;
int nickels = ( 145 - quarters * 25 - dimes * 10 ) / 5;