Binary to Decimal and Decimal to Binary

 

#include <stdio.h>

void main()

{

    int num,a, decimal = 0, base = 1, rem;

    printf("What u want to do\n");

    printf("1. Binary to Decimal: \n");

    printf("2. Decimal to binary: \n");

    scanf("%d",&a);

    if(a==1){

    printf("Enter the binary No: ");

    scanf("%d", &num);

    while (num > 0)

    {

        rem = num % 10;

        decimal = decimal + rem * base;

        num = num / 10;

        base = base * 2;

    }

    printf("The decimal is = %d", decimal);

    }

    else

    {

        printf("Enter the Decimal No: ");

    scanf("%d", &num);

    while (num > 0)

    {

        rem = num % 2;

        decimal = decimal + rem * base;

        num = num / 2;

        base = base * 10;

    }

    printf("The Binary is = %d", decimal);

    }

   

}