C ++将数字的小数部分转换为整数 [英] c++ convert a fractional part of a number into integer

问题描述

我需要将数字的小数部分转换为没有逗号的整数， 例如，我有3.35，我只想得到35个零件，没有零或逗号，

I needed to convert a fractional part of a number into integer without a comma, for example I have 3.35 I want to get just 35 part without zero or a comma,

因为我使用了modf()函数来提取小数部分，但它给出了0.35 是否有任何方法可以执行此操作或过滤"0".如果您向我展示如何使用较小的代码，我将非常感谢

Because I used the modf() function to extract the the fractional part but it gives me a 0.35 if there is any way to do that or to filter the '0.' part I will be very grateful if you show me how with the smaller code possible,

推荐答案

比转换为字符串然后再次返回要有效的多:

A bit more efficient than converting to a string and back again:

int fractional_part_as_int(double number, int number_of_decimal_places) {
    double dummy;
    double frac = modf(number,&dummy);
    return round(frac*pow(10,number_of_decimal_places));
}

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