4 Replies Latest reply on Mar 1, 2012 12:18 AM by userc_44214

    Unable to include stdlib.h

      I am trying to build code for the Psoc5 that uses the itoa function from stdlib.h.


      I have the #include <stdlib.h> at the beginning of main.c but It is not being included and I am getting errors related to


      undefined references to itoa. Do I need to explicitly set the include path in the build settings? and if so where would they be located.





        • 1. Re: Unable to include stdlib.h

          Hi r2park,




          If you are intending to convert from integer to ASCII string, then did you try using the sprintf( ) function to do the same?

          • 2. Re: Unable to include stdlib.h

            Well, as a matter of fact I use "#include <stdlib.h>" in a PSoC5 - project without any error-message. You should check for


            An installation-error


            An error occuring BEFORE the #include (mismatched brckets, missing semicolon...)




            A search reveiled 4 files named "stdio.h" one for each compiler (Keil, GNU 4, GNU generic, GNU ++)





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            • 3. Re: Unable to include stdlib.h

               Hello there. As Bob has pointed out, you can include stdlib.h without any issues. However, note that i2a may not be a standard C function. The best possible solution is to use, sprintf if what you are trying to achieve is integer to ascii conversion. 


              You can do it as follows, 




              sprintf(buffer, sizeof(buffer), "%d", i);


              your ascii result is now present in the buffer. You might have to include stdio.h in order to use sprintf

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              • 4. Re: Unable to include stdlib.h

                Thanks, the sprintf function works great. I had assumed that the itoa was a standard function due to atoi being in stlib.h