convert.c

// This program will convert unsigned int values for output in various bases
// including 2<= Base <= 16 and Base = 256
// There will be a Convert(Value, Base) routine called with hard coded values from main
// The Base = 256 case will be handled separately.
//
#include <stdio.h>

void Convert(unsigned int,unsigned int);
void DoOtherConvert(unsigned int);
int main()
{  int Base, Value;
   DoOtherConvert(123456789);
  Convert(-1,16);
    Convert(0xFACE,2);

}
// Convert will produce output with a printf() of a buffer prepared locally.
// The 'division algorithm' will be used to produce proper remainders (in backwards order)
// A table lookupwill be used to 'asciify' the remainders
void Convert( unsigned int Value, unsigned int Base)
{int BuffNdx; // values produced by the division algorithm
char *Table = "0123456789ABCDEF"; // for asciification of remainders
char OutputBuffer[80]; // characters will be placed here for a single printf("%s\n", ?)

if (Value == 0) printf("0");
else
{ OutputBuffer[79] = (char) 0; // Put a null to prepare for %s
   BuffNdx = 78;
   while (Value != 0)
  { OutputBuffer[BuffNdx--] = Table[ Value % Base];
    Value = Value / Base;
  }
  printf("%s\n",&OutputBuffer[++BuffNdx]);

}

}

void DoOtherConvert(unsigned int Value)
{
int Rem, BuffNdx; // values produced by the division algorithm
char *Table = "0123456789ABCDEF"; // for asciification of remainders
char OutputBuffer[80]; // characters will be placed here for a single printf("%s\n", ?)
OutputBuffer[79] = (char) 0; // Put a null to prepare for %s
   BuffNdx = 78;
 if (Value ==0) printf("0\n");
else
   while (Value != 0)
  {   = Value % 256;
    Value = Value / 256;
         if (Rem == 0) OutputBuffer[BuffNdx--]= '0';
    else
      { while (Rem != 0)
      {OutputBuffer[BuffNdx--] = Table[ Rem % 10];
           Rem = Rem / 10;
         }
        }
   
     OutputBuffer[BuffNdx--] = '.';
   }
            BuffNdx++;
    printf("%s\n",&OutputBuffer[++BuffNdx]);

  }