CPP

c++ convert binary string to decimal

// if the error terminate called after throwing an instance of 
// 'std::out_of_range' what():  stoi
// is being thrown by stoi use stol
string bin_string = "0101010101010101010101010101010101010101010101010101";
long number = 0;
number = stol(bin_string,0,2); // number = 1501199875790165

convert binary string to int c++

//first include library string
//define your binary string variable
//define int varibale to store converted int
//use function stoi()
#include <string>

std::string binaryString{"11010"};
int convertedNumber{};
convertedNumber = std::stoi(binaryString,0,2);

//Prints out 26