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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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  • S sacoskun

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

    M Offline
    M Offline
    Mad__
    wrote on last edited by
    #5

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

    S 1 Reply Last reply
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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

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      S Offline
      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! -

        T Offline
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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! -

            M Offline
            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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              T Offline
              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

              S 1 Reply Last reply
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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

                S Offline
                S Offline
                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! -

                  B Offline
                  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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