convert int into const char *
Using type-casting.
But before posting very evil code to do that - why are you trying to do that?
But before posting very evil code to do that - why are you trying to do that?
You can either use boost::lexical_cast or a std::stringstream.
Once in a string, you can use the c_str() member function to get a const char *.
std::stringstream sstr;sstr << my_int;std::string str1 = sstr.str();std::string str2 = boost::lexical_cast<std::string>(my_int);Once in a string, you can use the c_str() member function to get a const char *.
Author
i want to display a message box showing x-coordiante whenever left mouse click is being done
MessageBox(NULL, some const char (i suppose),"ERROR",MB_OK|MB_ICONEXCLAMATION);
so i want to convert point.x into some character array to pass it in MessageBox
arguments
MessageBox(NULL, some const char (i suppose),"ERROR",MB_OK|MB_ICONEXCLAMATION);
so i want to convert point.x into some character array to pass it in MessageBox
arguments
Author
also typecasting does not work
(const char*)point.x displays empty space instead of a coordinate
how to display the coordinates in a messagebox
(const char*)point.x displays empty space instead of a coordinate
how to display the coordinates in a messagebox
Quote:Original post by mnbvlk
also typecasting does not work
(const char*)point.x displays empty space instead of a coordinate
how to display the coordinates in a messagebox
Read SiCrane's post.
A little odd, but why has no-one yet mentioned itoa()?
personally I use _itot(...).
_itoa, _i64toa, _ui64toa, _itow, _i64tow, _ui64tow (CRT)
personally I use _itot(...).
_itoa, _i64toa, _ui64toa, _itow, _i64tow, _ui64tow (CRT)
Its pretty simple.
First make a char.
----------------------
char StringX[5];
----------------------
next call sprintf();
----------------------
sprintf(StringX,"%d",IntX);
-------------------------
This gets String X and fills it up with IntX. Dont mind the "%d" its just a parameter.
-------------------------
int other words, this is what you need.
int iMouseX = GetMouseX() //I guess you already got that far...
char szMouseX[5];
sprintf(szMouseX,"%d",MouseX);
MessageBox(NULL,szMouseX,"ERROR",MB_OK);
Hope this helps more then it hurts
First make a char.
----------------------
char StringX[5];
----------------------
next call sprintf();
----------------------
sprintf(StringX,"%d",IntX);
-------------------------
This gets String X and fills it up with IntX. Dont mind the "%d" its just a parameter.
-------------------------
int other words, this is what you need.
int iMouseX = GetMouseX() //I guess you already got that far...
char szMouseX[5];
sprintf(szMouseX,"%d",MouseX);
MessageBox(NULL,szMouseX,"ERROR",MB_OK);
Hope this helps more then it hurts
Quote:Original post by superdeveloper
A little odd, but why has no-one yet mentioned itoa()?
itoa() is a non-standard function. In fact, it's almost militantly non-standard. I've seen at least five different function signatures for itoa() over the years:
char * itoa(int, char *, int); // you supply the bufferchar * itoa(int, int, char *); // you supply the bufferchar * itoa(int, char *); // you supply the bufferchar * itoa(int, int); // you need to free the pointerchar * itoa(int); // you need to free the pointerDon't use itoa() if you even remotely care about portable code.
Quote:Original post by Jazonxyz
char szMouseX[5];
Congratulations, your code has a buffer overrun vulnerability.
This topic is closed to new replies.
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