Question

C语言中的 字符串转换成double

通过GetDlgItemText 获得数字的字符串 如何转换成double类型，且可以带有精度

Answer 1

GetDlgltemText定义是这样的UINT GetDlgItemText(
HWND hDlg, // handle to dialog box
int nIDDlgItem, // control identifier
LPTSTR lpString, // pointer to buffer for text
int nMaxCount // maximum size of string
);原本只是个UINT无符号的整形.想换成Double型.当然就是强制转换咯.~~~

Answer 2

用sscanf
char buffer[222];
double x;
sscanf(buffer, "%lf", &x);

sscanf在<stdio.h>里

Answer 3

玉子，Convert是c++类

纯c的话 double d_Number = atof(str_Number);

Answer 4

double dNumber = Convert::ToDouble(strNumber );