number to binary string c++
==== Convert number to binary string C++ ======
int n = 100;
string s1=""
//Method 1:
string s1 = bitset<8>(n).to_string(); // 01100100
//Method 2
while(n) {
s1 += (n%2) + '0';
n /= 2;
}
reverse(s1.begin(),s1.end()); // 1100100