Write an algorithm, draw a flow chart and write its corresponding C program to convert a decimal number to its equivalent hexadecimal number.

Ans.  Algorithm:

Step 1:  Input NUM

Step 2:  LEN = 0 & Y=NUM

Step 3:  While (Y > 0)

                       HEXD[LEN]=Y%16

                       Y=Y/16

                       LEN++

Step 4: for(I=LEN-1;I>-1;I–)

                       IF(HEXD[I]<10)

                                HEXC[I]=HEXD[I]+48;

                       ELSE

                                HEXC[I]=HEXD[I]+55;

Step 5:  HEXC[I]=NULL

Step 5:  Print HEXC

Program:

#include<stdio.h>

#include<math.h>

#include<conio.h>

int main()

{

      int decimal_number, remainder, hexadecimal_number = 0;

      int count = 0;

      scanf("Enter a Decimal Number:\t");

      scanf("%d", &decimal_number);

      while(decimal_number != 0)

      {

            remainder = decimal_number % 16;

            hexadecimal_number = hexadecimal_number + remainder * pow(10, count);

            decimal_number = decimal_number / 16;

            count++;

      }

      scanf("\nHexadecimal Equivalent:\t%d\n", hexadecimal_number);

      return 0;

getch();

}