c funvtion to convert decimal in octal with returning array pointer

Sigchi4life
Category:
Programming
Price: $5 USD

Question description

  #include <stdio.h>

#include<string.h>

#include<stdlib.h>

char* findBase(int , int );

int main()

  int n,d;

  char *b,*h,*o;

  do

  {

    printf("\n1.Decimal to Binary\n2.Decimal to Octal\n3.Decimal to Hexadecimal \n4.Exit\nEnter your choice:");

    scanf("%d",&n);

   

    switch(n)

    {

      case 1: 

       printf("\nEnter the decimal value:");

    scanf("%d",&d);

     b=findBase(d,2);

      printf("\nEquivalent Binary value of %d is %s",d,b);

        break;

      case 2:

       printf("\nEnter the decimal value:");

    scanf("%d",&d);

     o= findBase(d,8);

    printf("\nEquivalent  Octal value of %d is %s",d,o);

        break;

      case 3:

       printf("\nEnter the decimal value:");

    scanf("%d",&d);

     h= findBase(d,16);

      printf("\nEquivalent  Hexadecimal value of %d is %s",d,h);

      break;

        case 4: return 0;

    };

  }

  while(n<4);

  return 0;

}

char* findBase(int n, int b )

{

 long int quotient;

int i=1,j,temp,k=0;

static char ans[100],ret[100];

quotient =n;

  if(b==16){

    i=1;

    while(quotient!=0) {

temp = quotient % 16;

//To convert integer into character

if( temp < 10)

          temp =temp + 48; else

        temp = temp + 55;

ans[i++]= temp;

quotient = quotient / 16;

}

//printf("\nEquivalent  Hexadecimal value of %d is ",n);

for (j = i -1,k=0 ;j> 0;j--,k++)

     ret[k]=ans[j];

}

if(b==8)

{

  i=1;

  while(quotient!=0){

    temp=quotient % 8;

    temp=temp+48;

      ans[i++]= temp;

      quotient = quotient / 8;

  }

  //printf("\nEquivalent  Octal value of %d is ",n);

  for(j = i -1,k=0 ;j> 0;j--,k++)

      ret[k]=ans[j];

}

if(b==2)

{

  i=1;

  while(quotient!=0){

    temp=quotient % 2;

    if(temp==0)

      ans[i++]='0';

    else

      ans[i++]='1';

      quotient = quotient / 2;

  }

  //printf("\nEquivalent  Binary value of %d is ",n);

  for(j = i -1,k=0 ;j> 0;j--,k++)

      ret[k]=ans[j];

}

  ptr=ret;

  return ptr; 

}

here for decimal 16 binary will be 10000

and for decimal 16 octal should be 20

but octal is showing 2000

if input given after binary

if octal input is given first comes 20


Tutor Answer

(Top Tutor) Daniel C.
(997)
School: UIUC
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