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  4. I would like to convert int to char

I would like to convert int to char

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  • M Mad__

    You can use on of : sprintf, itoa ... of this pseudo code int = nex_digit while(int) char = 0x30+int

    S Offline
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    sacoskun
    wrote on last edited by
    #6

    I would like to run this function in my C++ code; void convertToBinary( int numberToConvert ) { if(!(( N / 2 ) < 1 )) { binaryRepresentation[counter] = ( N % 2 ); counter++; convertToBinary( N /= 2 ); } } but binaryRepresentation[counter] = ( N % 2 ); line of code does not work friend? - When in doubt, push a pawn! -

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    • S sacoskun

      char = '7' - When in doubt, push a pawn! -

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      toxcct
      wrote on last edited by
      #7

      char c;
      sscanf("7", "%s %c", &c);


      TOXCCT >>> GEII power

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      • T toxcct

        char c;
        sscanf("7", "%s %c", &c);


        TOXCCT >>> GEII power

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        sacoskun
        wrote on last edited by
        #8

        When I made sscanf( static_cast( N % 2 ) , "%s" , &binaryRepresentation[counter] ); Compiler gives an error like cannot convert parameter 1 from 'char' to 'const char * I'm a newbie in C++, Regards. - When in doubt, push a pawn! -

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        • S sacoskun

          I would like to run this function in my C++ code; void convertToBinary( int numberToConvert ) { if(!(( N / 2 ) < 1 )) { binaryRepresentation[counter] = ( N % 2 ); counter++; convertToBinary( N /= 2 ); } } but binaryRepresentation[counter] = ( N % 2 ); line of code does not work friend? - When in doubt, push a pawn! -

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          M Offline
          Mad__
          wrote on last edited by
          #9

          I don't understend what meen N in this code ;) For binare representation of value i use this function: char* BinPrintf(int value) { char tmp[256]; memset(tmp, 0, 256); int tpos = 0; while(value) { tmp[tpos++] = 0x30+value%2; value = value >> 1; } char *ret = new char[strlen(tmp)+1]; memset(ret, 0, strlen(tmp)+1); tpos = strlen(tmp)-1; value = 0; while(tpos > -1) ret[value++] = tmp[tpos--]; return ret; }

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          • S sacoskun

            When I made sscanf( static_cast( N % 2 ) , "%s" , &binaryRepresentation[counter] ); Compiler gives an error like cannot convert parameter 1 from 'char' to 'const char * I'm a newbie in C++, Regards. - When in doubt, push a pawn! -

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            toxcct
            wrote on last edited by
            #10

            kromozom wrote: sscanf( static_cast( N % 2 ) , "%s" , &binaryRepresentation[counter] ); that's normal, you associate a char with %s do this :

            sscanf( static_cast( N % 2 ) , "%c" , &binaryRepresentation[counter] );


            TOXCCT >>> GEII power

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            • T toxcct

              kromozom wrote: sscanf( static_cast( N % 2 ) , "%s" , &binaryRepresentation[counter] ); that's normal, you associate a char with %s do this :

              sscanf( static_cast( N % 2 ) , "%c" , &binaryRepresentation[counter] );


              TOXCCT >>> GEII power

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              sacoskun
              wrote on last edited by
              #11

              When I type; sscanf( static_cast( N % 2 ) , "%c" , &binaryRepresentation[counter] ); Same error occurs, cannot convert char to const char* Regards, - When in doubt, push a pawn! -

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              • S sacoskun

                When I made sscanf( static_cast( N % 2 ) , "%s" , &binaryRepresentation[counter] ); Compiler gives an error like cannot convert parameter 1 from 'char' to 'const char * I'm a newbie in C++, Regards. - When in doubt, push a pawn! -

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                B Offline
                Bob Stanneveld
                wrote on last edited by
                #12

                That is because static_cast( N % 2 ) is not a pointer to a char. I don't know what it is, because N is unknown to me... Take a look at the prototype of sscanf[^] and then start wondering how you should pass the parameters... Besides that, the solution that Mad__ gave you looks like what you want... :-D Multiply it by infinity and take it beyond eternity and you'll still have no idea about what I'm talking about.

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                • S sacoskun

                  I would like to run this function in my C++ code; void convertToBinary( int numberToConvert ) { if(!(( N / 2 ) < 1 )) { binaryRepresentation[counter] = ( N % 2 ); counter++; convertToBinary( N /= 2 ); } } but binaryRepresentation[counter] = ( N % 2 ); line of code does not work friend? - When in doubt, push a pawn! -

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                  David Crow
                  wrote on last edited by
                  #13

                  I assume binaryRepresentation is some sort of char array, and that N is actually numberToConvert. That being the case, what you have is working, but you are confusing 0 (ASCII 0) and '0' (ASCII 48). You simply need to change the statement to:

                  binaryRepresentation[counter] = (char) ((N % 2 ) + 48);

                  Now binaryRepresentation[counter] will contain '0' if N is an even number and '1' if N is an odd number. Of course, if you wanted to use a "built-in" solution, you could simply use itoa(numberToConvert, binaryRepresentation, 2).


                  "Opinions are neither right nor wrong. I cannot change your opinion of me. I can, however, change what influences your opinion." - David Crow

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                  • M Mad__

                    I don't understend what meen N in this code ;) For binare representation of value i use this function: char* BinPrintf(int value) { char tmp[256]; memset(tmp, 0, 256); int tpos = 0; while(value) { tmp[tpos++] = 0x30+value%2; value = value >> 1; } char *ret = new char[strlen(tmp)+1]; memset(ret, 0, strlen(tmp)+1); tpos = strlen(tmp)-1; value = 0; while(tpos > -1) ret[value++] = tmp[tpos--]; return ret; }

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                    David Crow
                    wrote on last edited by
                    #14

                    Mad__ wrote: char *ret = new char[strlen(tmp)+1]; memset(ret, 0, strlen(tmp)+1); tpos = strlen(tmp)-1; value = 0; while(tpos > -1) ret[value++] = tmp[tpos--]; This code could simply be replaced with a call to strrev(tmp).


                    "Opinions are neither right nor wrong. I cannot change your opinion of me. I can, however, change what influences your opinion." - David Crow

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                    • D David Crow

                      I assume binaryRepresentation is some sort of char array, and that N is actually numberToConvert. That being the case, what you have is working, but you are confusing 0 (ASCII 0) and '0' (ASCII 48). You simply need to change the statement to:

                      binaryRepresentation[counter] = (char) ((N % 2 ) + 48);

                      Now binaryRepresentation[counter] will contain '0' if N is an even number and '1' if N is an odd number. Of course, if you wanted to use a "built-in" solution, you could simply use itoa(numberToConvert, binaryRepresentation, 2).


                      "Opinions are neither right nor wrong. I cannot change your opinion of me. I can, however, change what influences your opinion." - David Crow

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                      sacoskun
                      wrote on last edited by
                      #15

                      Thanks all for help, I solved it... - When in doubt, push a pawn! -

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