convert int to const char*

**meehanmd** · 03-24-2006

hi, i currently want to output a scoring system into a game im making through C++ and SDL the code for outputting the text onto the screen is

SDL_Surface *text=TTF_RenderText_Blended(font, "message", col);

the part "message" is of type const char* and i want to have an int outputted there (for example a score, or amount of ammo)
any ideas would be vey much appreciated

**Salem** · 03-24-2006

Code:

char buff[100];
sprintf( buff, "%d", myScore );
SDL_Surface *text=TTF_RenderText_Blended(font, buff, col);

**major_small** · 03-24-2006

Code:

#include <iostream>

void foo(const char*in);

int main()
{
	int score=5;
	char str[2]={'\0'};
	str[0]=static_cast<char>(score+static_cast<int>('0'));
	foo(str);
	return 0;
}

void foo(const char*in)
{
	std::cout<<in<<std::endl;
}

a loop and some math will help you convert more than a single digit.

edit: or salem's method

**meehanmd** · 03-24-2006

Originally Posted by Salem

Code:

char buff[100];
sprintf( buff, "%d", myScore );
SDL_Surface *text=TTF_RenderText_Blended(font, buff, col);

thats brilliant thanks.
just wondering, what exactly is sprintf and that %d thing if its not too much hassle

**major_small** · 03-24-2006

sprintf is c for cout, and %d means "the first variable should be printed as a decimal"

**meehanmd** · 03-24-2006

thats great again, thanks

**Salem** · 03-24-2006

If you're after a c++ method, then look at string streams, then extract the result using the .c_str() method.

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