字符串浮充转换？ [英] string to float conversion?

问题描述

我不知道可以用什么样的算法，采取类似4.72变成了浮点数据类型，等于

 浮动X = 4.72;
 

解决方案

scanf函数，运营商的GT;＆GT; 的istreams和 strtof 将是显而易见的选择。

有是的还有 ATOF ，但是，像的atoi ，它缺乏一种方式告诉你有输入错误，所以一般最好是避免两者。

I'm wondering what sort of algorithm could be used to take something like "4.72" into a float data type, equal to

float x = 4.72;

解决方案

scanf, operator>> for istreams, and strtof would be the obvious choices.

There is also atof, but, like atoi, it lacks a way to tell you there was an error in the input, so it's generally best to avoid both.

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