CString str1,str2,str3,str4;
double dstr1,dstr2,dstr3,dstr3;
GetDlgItemText(IDC_thismonth_water,str1);
GetDlgItemText(IDC_precedingmonth_water,str2);
GetDlgItemText(IDC_fee_water,str3);
str1.Format(
str1怎么样变成double型的
double dstr1,dstr2,dstr3,dstr3;
GetDlgItemText(IDC_thismonth_water,str1);
GetDlgItemText(IDC_precedingmonth_water,str2);
GetDlgItemText(IDC_fee_water,str3);
str1.Format(
str1怎么样变成double型的
dstr1 =(double)atof(str1);
str1.Format("%f",dstr1);
有报错
d:\zmh\c++\workspace\fee\fee\newinfo.cpp(97) : error C2664: 'void ATL::CStringT<BaseType,StringTraits>::Format(const wchar_t *,...)' : cannot convert parameter 1 from 'const char [3]' to 'const wchar_t *'
with
[
BaseType=wchar_t,
StringTraits=StrTraitMFC_DLL<wchar_t>
]
Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
double到cstring :
int sprintf( char *buffer, const char *format [,argument] ... );cstring到double:
double atof(const char *string);
double转cstring
str1.format("%f",dstr1); ==>str1.Format(_T("%f"),dstr1);
string转double
dstr1 =(double)atof(str1);==> dstr1 =(double)_wtof(str1)
用_ttof函数,用法一样