Hello i am currently creating my first SDL game and i need a little counter on the side of my screen that displays the score however when i do the normal
message = TTF_RenderText_Solid( font,score textColor );i get an error stating i cannot convert a int to char*,How can i overcome this?
You might not have provided enough information for someone to help. But I'll take a stab. Also I think you have a typo and missed a comma in the code you did post.
I am assuming 'score' is an int and the function, TTF_RenderText_Solid is expecting a char* for the second arguement.
A simple way to do this would be:
char textBuffer[64];
sprintf(textBuffer, "%d", score); // Write the int 'score' into a char buffer
TTF_RenderText_Solid(font, textBuffer, textColor);
sprintf works just like printf but writes into a char buffer instead of standard out.
The error you received was pretty straight forward. You were trying to use a variable of type 'int' when a variable of type 'char*' was expected.
#include <sstream>
...
std::ostringstream oss;
oss << score;
TTF_RenderText_Solid(font, oss.str().c_str(), textColor);
The OP tagged the topic as C++, so supplying the native C++ way to do this would have been better (especially since it's clear the OP is still lacking a lot of experience and the *printf-family of C function can get you quickly into difficult to find, obscure bugs if you are careless):
#include <sstream> ... std::ostringstream oss; oss << score; TTF_RenderText_Solid(font, oss.str().c_str(), textColor);
Google does not provide info on "ostringstream" is that same or equal to "stringstream" ?
Answer to question:
To convert "int" to "char" use stringstream.
First include it
#include <stringstream>
Second declare a object of stringstream
std::stringstream objSS;
Third store data intro stringstream
int my_int = 100;
char my_char = 'a';
std::string my_string = "Good day sir";
objSS << my_int;
objSS << my_char;
objSS << my_string;
std::cout << objSS.str() << std::endl;
100aGood day sir
To clear already used stringstream
objSS.clear();//This will clear any errors that may occured
objSS.str(std::string()); //This will clear your stringstream object allowing for reuse
<blockquote class="ipsBlockquote" data-author="BaneTrapper" data-cid="5022847"><p>Google does not provide info on "ostringstream" is that same or equal to "stringstream" ?</p></blockquote><br /><a data-cke-saved-href="http://en.cppreference.com/w/cpp/io/basic_ostringstream" href="http://en.cppreference.com/w/cpp/io/basic_ostringstream">Linky</a>
Thank you for the webpage.
[quote name='BaneTrapper' timestamp='1358505267' post='5022847']
Google does not provide info on "ostringstream" is that same or equal to "stringstream" ?[/quote]
All standard library stream classes come in 'input' and 'output' varieties, prefixed respectively with 'i' and 'o'.
The non-prefix version is a bidirectional stream which may be used to interleave both input and output on the same underlying stream object.
