Converting Binary to Decimal built-in function

In C++, I need to do a binary to decimal conversion.

I know how to do it by hand, but I was wondering if there was a function that could do it for me.

For example, if I have a decimal number and want to print it in another base, I just call setbase (base).

std::cout<<std::setbase(16)<<20; // prints 20 in base 16. Is it possible to do something similar but convert from binary to decimal?

Jul 15, 2022 in C++ by Nicholas
• 7,760 points • 755 views

No answer to this question. Be the first to respond.

Your answer

Your name to display (optional):

Email me at this address if my answer is selected or commented on:

Privacy: Your email address will only be used for sending these notifications.

Reverse a number without converting it to string in C++

I'm attempting to write a programme in C++ to reverse a number. It works well with numbers like 1234, but when I try to enter a number like 5430, it displays 345, and the same with numbers that begin with zero, such as 0234, which displays 432. Could someone please explain how to deal with zeros at the beginning and end of a sentence? I simply need to save the number without converting it to a string. #include<iostream> using namespace std; int main(){ ...READ MORE

Jun 30, 2022 in C++ by Nicholas
• 7,760 points • 621 views

0 votes

1 answer

Is there any built-in factorial function in c++?

Although no C function is written particularly for computing factorials, the C math package allows you to compute the gamma function. Because (n) Equals (n-1)! Using tgamma of i+1 on positive integers returns i!. for (int i = 1 ; ...READ MORE

answered Aug 2, 2022 in C++ by Damon
• 4,960 points • 7,972 views

0 votes

1 answer

How to use std::sort to sort an array in C++

We receive std::begin and std::end in C++0x/11, which are overloaded for arrays: #include <algorithm> int main(){ int v[2000]; ...READ MORE

answered Jun 1, 2022 in C++ by Damon
• 4,960 points • 1,157 views

0 votes

0 answers

How to traverse stack in C++?

Is traversing std::stack possible in C++? It is not possible to traverse using the following method. Because there is no member end in std::stack. std::stack<int> foo; // .. for (__typeof(foo.begin()) it = foo.begin(); ...READ MORE

Jun 1, 2022 in C++ by Nicholas
• 7,760 points • 2,226 views

0 votes

0 answers

What is the C++ function to raise a number to a power?

What's the best way to raise a n ...READ MORE

Jun 1, 2022 in C++ by Nicholas
• 7,760 points • 541 views

0 votes

1 answer

Function default argument value depending on argument name in C++ [duplicate]

When the function is called with no argument for the corresponding parameter, the default argument is evaluated. In a default argument, a parameter must not appear as a potentially evaluated expression. A function's parameters declared before a default argument are in scope and can obscure the namespace and class member name. It provides the following example: int h(int a, ...READ MORE

answered Jun 7, 2022 in C++ by Damon
• 4,960 points • 606 views

0 votes

1 answer

C++ - Decimal to binary converting

The.to string() function of std::bitset returns a std::string containing a binary text representation with leading-zero padding. Use std::bitset32> to get 32-character strings from 32-bit integers, or std::bitset32> to get 32-character strings from 32-bit integers. #include <iostream> #include <bitset> int main() { ...READ MORE

answered Jun 10, 2022 in C++ by Damon
• 4,960 points • 563 views

0 votes

1 answer

Easiest way to convert int to string in C++

The C++11 version has introduced the std::stoi ...READ MORE

answered Feb 10, 2022 in Others by Rahul
• 9,680 points • 538 views

0 votes

1 answer

Easiest way to convert int to string in C++

C++ adds std::stoi (and variants for each numeric type) and std::to string, which are the C equivalents of atoi and itoa but expressed in terms of std::string #include <string> std::string s = std::to_string(42); Is therefore ...READ MORE

answered Jun 1, 2022 in C++ by Damon
• 4,960 points • 1,418 views

0 votes

1 answer

How to reverse an std::string?

A reverse function is integrated into C++ and can be used to reverse a string. This function accepts two parameters: The start iterator for the string The string iterator has come to an end. The following line of code demonstrates how to use this function: #include <iostream> //The library below must be included ...READ MORE