## Oct 19, 2011

### C program to convert the given Binary number into its equivalent Decimal,Octal and Hexadecimal numbers.

C Program to convert binary number into its equivalent Decimal, Octal, and Hexadecimal number systems. In this program we convert the binary number to decimal number, then converted that decimal to octal and decimal to hexadecimal. Read more about C Programming Language .

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#include <stdio.h>
#include<string.h>
void main()
{
int   num, bnum, dec = 0, base = 1, rem ,dec1=0,oct[25],dec2=0,flag=0,i=0,counter=0,j;

printf("Enter the binary number(1s and 0s)\n");
scanf("%d", &num);

bnum = num;

while( num > 0)
{
rem = num % 10;
if((rem==0) || (rem==1))
{
dec = dec + rem * base;
num = num / 10 ;
base = base * 2;
flag=1;
}
else
{
flag=0;
printf("\nEnter binary number\n");
break;
}
}
if(flag==1)
{
printf("The Binary number is = %d\n", bnum);
printf("Its decimal equivalent is =%d\n", dec);
dec1=dec;
dec2=dec1;
while(dec>0)
{
rem=dec%8;
oct[i]=rem;
dec=dec/8;
i++;
counter++;

}
counter--;
printf("\n Its octal equivalent is:");
while(counter>=0){
printf("%d" ,oct[counter]);
counter--;
}

printf("\nIts Hexa Decimal  equivalant is:  ");

}
}
{
long i;
if(n>0)
{
i=n%16;
n=n/16;
if(i>=10)
{
switch(i)
{
case 10:
printf("A");
break;
case 11:
printf("B");
break;
case 12:
printf("C");
break;
case 13:
printf("D");
break;
case 14:
printf("E");
break;
case 15:
printf("F");
break;
}
}
else
printf("%ld",i);
}
}
```
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