Dado un número binario como entrada, necesitamos escribir un programa para convertir el número binario dado en un número decimal equivalente.
Ejemplos:
C++
// C++ program to convert binary to decimal
#include <iostream>
using namespace std;
// Function to convert binary to decimal
int binaryToDecimal(int n)
{
int num = n;
int dec_value = 0;
// Initializing base value to 1, i.e 2^0
int base = 1;
int temp = num;
while (temp) {
int last_digit = temp % 10;
temp = temp / 10;
dec_value += last_digit * base;
base = base * 2;
}
return dec_value;
}
// Driver program to test above function
int main()
{
int num = 10101001;
cout << binaryToDecimal(num) << endl;
}
Java
// Java program to convert
// binary to decimal
// Function to convert
// binary to decimal
class GFG {
static int binaryToDecimal(int n)
{
int num = n;
int dec_value = 0;
// Initializing base
// value to 1, i.e 2^0
int base = 1;
int temp = num;
while (temp > 0) {
int last_digit = temp % 10;
temp = temp / 10;
dec_value += last_digit * base;
base = base * 2;
}
return dec_value;
}
// Driver Code
public static void main(String[] args)
{
int num = 10101001;
System.out.println(binaryToDecimal(num));
}
}
// This code is contributed by mits.
Python3
# Python3 program to convert # binary to decimal # Function to convert # binary to decimal def binaryToDecimal(n): num = n; dec_value = 0; # Initializing base # value to 1, i.e 2 ^ 0 base = 1; temp = num; while(temp): last_digit = temp % 10; temp = int(temp / 10); dec_value += last_digit * base; base = base * 2; return dec_value; # Driver Code num = 10101001; print(binaryToDecimal(num)); # This code is contributed by mits
C#
// C# program to convert
// binary to decimal
// Function to convert
// binary to decimal
class GFG {
public static int binaryToDecimal(int n)
{
int num = n;
int dec_value = 0;
// Initializing base1
// value to 1, i.e 2^0
int base1 = 1;
int temp = num;
while (temp > 0) {
int last_digit = temp % 10;
temp = temp / 10;
dec_value += last_digit * base1;
base1 = base1 * 2;
}
return dec_value;
}
// Driver Code
public static void Main()
{
int num = 10101001;
System.Console.Write(binaryToDecimal(num));
}
}
// This code is contributed by mits.
PHP
<?php
// PHP program to convert
// binary to decimal
// Function to convert
// binary to decimal
function binaryToDecimal($n)
{
$num = $n;
$dec_value = 0;
// Initializing base value
// to 1, i.e 2^0
$base = 1;
$temp = $num;
while ($temp)
{
$last_digit = $temp % 10;
$temp = $temp / 10;
$dec_value += $last_digit
* $base;
$base = $base*2;
}
return $dec_value;
}
// Driver Code
$num = 10101001;
echo binaryToDecimal($num), "\n";
// This code is contributed by ajit
?>
Javascript
<script>
// JavaScript program to convert binary to decimal
// Function to convert binary to decimal
function binaryToDecimal(n)
{
let num = n;
let dec_value = 0;
// Initializing base value to 1, i.e 2^0
let base = 1;
let temp = num;
while (temp) {
let last_digit = temp % 10;
temp = Math.floor(temp / 10);
dec_value += last_digit * base;
base = base * 2;
}
return dec_value;
}
// Driver program to test above function
let num = 10101001;
document.write(binaryToDecimal(num) + "<br>");
// This code is contributed by Surbhi Tyagi
</script>
C++
// C++ program to convert binary to decimal
// when input is represented as binary string.
#include <iostream>
#include <string>
using namespace std;
// Function to convert binary to decimal
int binaryToDecimal(string n)
{
string num = n;
int dec_value = 0;
// Initializing base value to 1, i.e 2^0
int base = 1;
int len = num.length();
for (int i = len - 1; i >= 0; i--) {
if (num[i] == '1')
dec_value += base;
base = base * 2;
}
return dec_value;
}
// Driver program to test above function
int main()
{
string num = "10101001";
cout << binaryToDecimal(num) << endl;
}
Java
// Java program to convert binary to
// decimal when input is represented
// as binary string.
import java.io.*;
class GFG {
// Function to convert binary to decimal
static int binaryToDecimal(String n)
{
String num = n;
int dec_value = 0;
// Initializing base value to 1,
// i.e 2^0
int base = 1;
int len = num.length();
for (int i = len - 1; i >= 0; i--) {
if (num.charAt(i) == '1')
dec_value += base;
base = base * 2;
}
return dec_value;
}
// Driver program to test above function
public static void main(String[] args)
{
String num = new String("10101001");
System.out.println(binaryToDecimal(num));
}
}
// This code is contribute by Prerna Saini
Python3
# Python3 program to convert binary # to decimal when input is # represented as binary string. # Function to convert # binary to decimal def binaryToDecimal(n): num = n; dec_value = 0; # Initializing base # value to 1, i.e 2 ^ 0 base1 = 1; len1 = len(num); for i in range(len1 - 1, -1, -1): if (num[i] == '1'): dec_value += base1; base1 = base1 * 2; return dec_value; # Driver Code num = "10101001"; print(binaryToDecimal(num)); # This code is contributed by mits
C#
// C# program to convert binary to
// decimal when input is represented
// as binary string.
using System;
class GFG {
// Function to convert binary to decimal
static int binaryToDecimal(String n)
{
String num = n;
int dec_value = 0;
// Initializing base value to 1,
// i.e 2^0
int base1 = 1;
int len = num.Length;
for (int i = len - 1; i >= 0; i--) {
if (num[i] == '1')
dec_value += base1;
base1 = base1 * 2;
}
return dec_value;
}
// Driver Code
public static void Main()
{
String num = "10101001";
Console.WriteLine(binaryToDecimal(num));
}
}
// This code is contribute by mits
PHP
<?php
// PHP program to convert binary
// to decimal when input is
// represented as binary string.
// Function to convert
// binary to decimal
function binaryToDecimal($n)
{
$num = $n;
$dec_value = 0;
// Initializing base
// value to 1, i.e 2^0
$base = 1;
$len = strlen($num);
for ($i = $len - 1; $i >= 0; $i--)
{
if ($num[$i] == '1')
$dec_value += $base;
$base = $base * 2;
}
return $dec_value;
}
// Driver Code
$num = "10101001";
echo binaryToDecimal($num), "\n";
// This code is contributed by aj_36
?>
Javascript
<script>
// Javascript program to convert binary to decimal
// when input is represented as binary string.
// Function to convert binary to decimal
function binaryToDecimal(n)
{
let num = n;
let dec_value = 0;
// Initializing base value to 1, i.e 2^0
let base = 1;
let len = num.length;
for (let i = len - 1; i >= 0; i--) {
if (num[i] == '1')
dec_value += base;
base = base * 2;
}
return dec_value;
}
// Driver program to test above function
let num = "10101001";
document.write(binaryToDecimal(num) + "<br>");
// This code is contributed by Mayank Tyagi
</script>
C++
#include <iostream>
using namespace std;
int main()
{
char binaryNumber[] = "1001";
cout << stoi(binaryNumber, 0, 2);
return 0;
}
// This code is contributed by whysodarkbro
C
#include <stdio.h>
#include <math.h>
#include <stdlib.h>
int main()
{
char binaryNumber[] = "1001";
int bin, dec = 0;
bin = atoi(binaryNumber);
for(int i = 0; bin; i++, bin /= 10)
if (bin % 10)
dec += pow(2, i);
printf("%d", dec);
return 0;
}
// This code is contributed by whysodarkbro
Java
public class GFG {
public static void main(String args[])
{
String binaryNumber = "1001";
System.out.println(Integer.parseInt(binaryNumber, 2));
}
}
// This code is contributed
// By Yash Kumar Arora
Python3
n = input() # Convert n to base 2 s = int(n, 2) print(s)
C#
using System;
class GFG {
public static void Main()
{
int value = 1001;
Console.Write(Convert.ToInt32(value.ToString(), 2));
}
}
// This code is contributed by SoumikMondal
Javascript
<script> var binaryNumber = "1001"; document.write(parseInt(binaryNumber, 2)); // This code contributed by Princi Singh </script>
Publicación traducida automáticamente
Artículo escrito por GeeksforGeeks-1 y traducido por Barcelona Geeks. The original can be accessed here. Licence: CCBY-SA