C++ program to convert binary to decimal using functions

In this chapter of C++ program tutorial our task is to write simple: 

• c++ program to convert binary number to decimal

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C++ program to convert binary to decimal using functions

Below is the c++ program to convert binary to decimal using functions:

/*  Program Name: To convert a binary number to its decimal equivalent
    Program Author: Sayantan Bose
*/
#include <iostream>
#include <math.h>
using namespace std;

//Function to make the conversion
 int solve(long long num) {
 int decimal = 0, i = 0, r;
 while (num != 0) {
 r = num % 10;
 num /= 10;
 decimal += r * pow(2, i);
 ++i;
 }
 return decimal;
 }

 //Main function
int main() {
 long long num;
 cout<<"Enter a binary number: ";
 cin>>num;
 int decimal_num=solve(num);
 cout<<num<< " in binary = "<< decimal_num<< " in decimal";
 return 0;
 }

OUTPUT

You can see the above code execution and output in codeblocks IDE: