Write a program to convert binary number to decimal number

/* ***********************************************
    Write a program to convert binary number to decimal number

 date:04-06-2019
 created by:ANIL DURGAM

*****************************************************/


#include <stdio.h>
#include <stdlib.h>

int main()
{
    int n,nsave,rem,d,j=1,dec=0;
    printf("Enter the binary number\n");
    scanf("%d",&n);
    nsave=n;
    while(n>0)
    {
        rem=n%10;
        d=rem*j;
        dec+=d;
        j*=2;
        n/=10;
    }
    printf("binary num==%d,Decimal number=%d\n",nsave,dec);

    return 0;
}

Write a program to count the individual numbers of the given number program 2: #include <stdio.h> #include <stdlib.h> long binary (long int num); main() {     long int num;     printf("Enter the decimal number\n");     scanf("%ld",&num) ;     printf("Decimal=%ld,Binary=%ld\n",num,binary(num)); } long binary(long int num) { long rem,a=1,bin=0; while(num>0) {     rem=num%2;     bin=bin+rem*a;     num/=2;     a*=10; }     return bin; }