Program to convert Binary Number to Decimal

Computer only understand two numbers, they are 1 and 0 called binary number. Decimal means number 0,1,2,3,4,5,6,7,8,9. You have to convert binary number to decimal number.

//binary to decimal conversion.

#include<stdio.h>
#include<math.h>
#include<conio.h>
void main()
{
int bin,dec=0,i=0,dig;
printf(“\n Enter a binary no.:”);
scanf(“%d”,&bin);

while(bin>0)
{
dig=bin%10;
dec=dec+pow(2,i++)*dig;
bin=bin/10;
}
printf(“\n Decimal conversion of given no.: %d”,dec);
}

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Input: 11011
Output: 27

Using this procedure you can also convert octal to decimal and hexadecimal to decimal by changing the base to 8 or 16 respectively.