CString str1;
int a=atoi(str1.GetBuffer(0));
str1.ReleaseBuffer();//CString->int
CString str2;
int b=10;
str2.Format("the num is %d.",b);//int->CString
CString str1;
int a=atoi(str1.GetBuffer(0));
str1.ReleaseBuffer();//CString->int
CString str2;
int b=10;
str2.Format("the num is %d.",b);//int->CString