convert decimal to binary c 2b 2b

1string bin_string = "10101010";
2int number =0;
3number = stoi(bin_string, 0, 2);
4// number = 170

1
2// C++ program to convert a decimal 
3// number to binary number 
4  
5#include <iostream> 
6using namespace std; 
7  
8// function to convert decimal to binary 
9void decToBinary(int n) 
10{ 
11    // array to store binary number 
12    int binaryNum[32]; 
13  
14    // counter for binary array 
15    int i = 0; 
16    while (n > 0) { 
17  
18        // storing remainder in binary array 
19        binaryNum[i] = n % 2; 
20        n = n / 2; 
21        i++; 
22    } 
23  
24    // printing binary array in reverse order 
25    for (int j = i - 1; j >= 0; j--) 
26        cout << binaryNum[j]; 
27} 
28  
29// Driver program to test above function 
30int main() 
31{ 
32    int n = 17; 
33    decToBinary(n); 
34    return 0; 
35} 

1- Convert decimal to binary string using std::bitset
2int n = 10000;
3string s = bitset<32>(n).to_string(); // 32 is size of n (int)

1// C++ program for decimal to binary 
2
3#include <iostream>
4#include <algorithm>
5#include <string>
6#include <vector>
7
8
9using namespace std; 
10
11int main() {
12
13    vector<int>nums; // list that will hold binary values
14
15    int num = 0; 
16    cout<<"Number: "<<endl;
17    cin>>num; // number input 
18    int i=0; // iterator for vector
19
20    while(num!=0)
21    {
22        nums.push_back(num%2); // adds binary value to the back of string 
23        i++; // i gets incremented for the next position in vector 
24        num=num/2; 
25    }
26 
27    reverse(nums.begin(),nums.end()); // reverses order of vector 
28  
29    for(auto x:nums)
30    {
31        cout<<x; // outputs stuff in vector 
32    }
33  return 0; 
34}