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Converting Decimal To other base up to 16

Converts Decimal to Other Bases from 2 to 16 and displays it. [Both Iterative And Recursive]

Submitted By: AmitTheInfinity

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Views: 4,438

Language: C

Last Modified: February 7, 2007

Snippet

#include <stdio.h>
void convertToBase(int, int);
void convertToBaseRec(int, int);
void main()
{
int base,number;
// the number to be converted
printf("Enter The Number : ");
scanf("%d",&number);
// accept only valid based that is from 2 to 16
while(base>16 || base<2)
{
printf("Enter The Base : ");
scanf("%d",&base);
}
//iterative
printf("\n Output Of Iterative Conversion : ");
convertToBase(base,number);
//recursion
printf("\n Output Of Recursive Conversion : ");
convertToBaseRec(base,number);
}
//convert and print the answer
void convertToBase(int base, int number)
{
//this array contains all digits that are used in different bases til 16 [hex]
char digits[]={'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};
char output[100];
int i=0;
//actual logic
while(number>0)
{
//copy character from array digit situated at index = reminder of number / base
output[i++] = digits[number%base];
number = number/base;
}
i--;
//print output
for(;i>=0;i--)
{
printf("%c",output[i]);
}
}
void convertToBaseRec(int base, int number)
{
//this array contains all digits that are used in different bases til 16 [hex]
char digits[]={'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};
//actual logic
if(number<=0)
{
return;
}
//Call Recursively
convertToBaseRec(base,number/base);
//print character from array digit situated at index = reminder of number / base
printf("%c",digits[number%base]);
}

Copy & Paste

#include <stdio.h>

void convertToBase(int, int);
void convertToBaseRec(int, int);
void main()
{
     int base,number;
     // the number to be converted
     printf("Enter The Number : ");
     scanf("%d",&number);
     // accept only valid based that is from 2 to 16
     while(base>16 || base<2)
     {
          printf("Enter The Base : ");
          scanf("%d",&base);
     }
     //iterative
      printf("\n Output Of Iterative Conversion : ");
     convertToBase(base,number);
      //recursion
      printf("\n Output Of Recursive Conversion : ");
     convertToBaseRec(base,number);
}

//convert and print the answer

void convertToBase(int base, int number)
{
     //this array contains all digits that are used in different bases til 16 [hex]
     char digits[]={'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};
     char output[100];
     int i=0;
     //actual logic
     while(number>0)
     {
          //copy character from array digit situated at index = reminder of number / base
          output[i++] = digits[number%base];     
          number = number/base;
     }
     i--;
     //print output
     for(;i>=0;i--)
     {
          printf("%c",output[i]);
     }
}

void convertToBaseRec(int base, int number)
{
    //this array contains all digits that are used in different bases til 16 [hex]
     char digits[]={'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};
     //actual logic
     if(number<=0)
     {
          return;
     }
     //Call Recursively
     convertToBaseRec(base,number/base);
     //print character from array digit situated at index = reminder of number / base
     printf("%c",digits[number%base]);     
     
}

Comments
npsnet 2009-03-08 00:23:58
Is there any C code snippet which will directly convert Binary format string to Hexadecimal string ? plz let me know