Question

Write a C program for decimal to factorial number system conversion and vice versa?

Answer 1

#include <stdio.h> #include <math.h> int convertBinaryToDecimal(long long n);  int main() {     long long n;     printf("Enter a binary number: ");     scanf("%lld", &n);     printf("%lld in binary = %d in decimal", n, convertBinaryToDecimal(n));     return 0; }  int convertBinaryToDecimal(long long n) {     int decimalNumber = 0, i = 0, remainder;     while (n!=0)     {         remainder = n%10;         n /= 10;         decimalNumber += remainder*pow(2,i);         ++i;     }     return decimalNumber; }