Write a program to binary to decimal and decimal to binary

Question

Accepted Answer

A program to convert binary to decimal and decimal to binary.

For binary to decimal conversion, iterate through each digit of the binary number and multiply it by 2 raised to the power of its position.
For decimal to binary conversion, repeatedly divide the decimal number by 2 and keep track of the remainders.
Use the modulo operator (%) to get the remainder and the division operator (/) to get the quotient.

Accepted Answer

#include 
#include 
int convert(long long);
int main() {
  long long n;
  printf("Enter a binary number: ");
  scanf("%lld", &n);
  printf("%lld in binary = %d in decimal", n, convert(n));
  return 0;
}
int convert(long long n) {
  int dec = 0, i = 0, rem;
  while (n!=0) {
    rem = n % 10;
    n /= 10;
    dec += rem * pow(2, i);
    ++i;
  }
  return dec;

#include 
#include 
long long convert(int);
int main() {
  int n, bin;
  printf("Enter a decimal number: ");
  scanf("%d", &n);
  bin = convert(n);
  printf("%d in decimal =  %lld in binary", n, bin);
  return 0;
}
long long convert(int n) {
  long long bin = 0;
  int rem, i = 1;
  while (n!=0) {
    rem = n % 2;
    n /= 2;
    bin += rem * i;
    i *= 10;
  }
  return bin;
}

Accepted Answer

#include 
#include 
int convert(long long);
int main() {
  long long n;
  printf("Enter a binary number: ");
  scanf("%lld", &n);
  printf("%lld in binary = %d in decimal", n, convert(n));
  return 0;
}
int convert(long long n) {
  int dec = 0, i = 0, rem;
  while (n!=0) {
    rem = n % 10;
    n /= 10;
    dec += rem * pow(2, i);
    ++i;
  }
  return dec;

#include 
#include 
long long convert(int);
int main() {
  int n, bin;
  printf("Enter a decimal number: ");
  scanf("%d", &n);
  bin = convert(n);
  printf("%d in decimal =  %lld in binary", n, bin);
  return 0;
}
long long convert(int n) {
  long long bin = 0;
  int rem, i = 1;
  while (n!=0) {
    rem = n % 2;
    n /= 2;
    bin += rem * i;
    i *= 10;
  }
  return bin;
}

Write a program to binary to decimal and decimal to binary

Popular interview questions of Software Engineer

Top HR questions asked in 4W Technologies Software Engineer