C++ Exercises: Convert a binary number to decimal number
C++ For Loop: Exercise-73 with Solution
Write a C++ program to convert a binary number to a decimal number.
Pictorial Presentation:

Sample Solution:-
C++ Code :
#include <iostream>
#include <math.h>
using namespace std;
int main()
{
long binaryNumber, decimalNumber = 0, j = 1, remainder;
cout << "\n\n Convert a binary number to decimal number:\n";
cout << "-----------------------------------------------\n";
cout << " Input a binary number: ";
cin>> binaryNumber;
while (binaryNumber != 0)
{
remainder = binaryNumber % 10;
decimalNumber = decimalNumber + remainder * j;
j = j * 2;
binaryNumber = binaryNumber / 10;
}
cout<<" The decimal number: " << decimalNumber<<"\n";
}
Sample Output:
Convert a binary number to decimal number: ----------------------------------------------- Input a binary number: 1011 The decimal number: 11
Flowchart:

C++ Code Editor:
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Previous: Write a program in C++ to convert a decimal number to octal number.
Next: Write a program in C++ to convert a binary number to hexadecimal number.
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