hi

[lol2020]

can i switch bit

[MikeyBoy]

Huh? Your question is meaningless. Can you explain clearly, precisely, and completely what it is you want to do?

[Ganado]

Flipping a bit works best with a simple xor:
0 xor 1 = 1
1 xor 1 = 0

// Example program
#include <iostream>
#include <cstdint>

int main()
{
    // flip 2nd bit from the right, from 0.
    // 
    uint8_t mask = (1 << 2); // 0b00000100
    
    //              76543210
    uint8_t num = 0b00001010;
    
    num ^= mask;
    
    std::cout << (int)num << std::endl;
}

[jonnin]

c++ supports bitwise logic operations on integer types. & is and, | is or, ^ is xor, ~ not

[lastchance]

#include <iostream>
#include <iomanip>
#include <bitset>
using namespace std;


void flipbit( unsigned &n, unsigned bit )
{ 
   n ^= ( 1 << bit );
}


void print( unsigned n )
{
   cout << setw( 12 ) << n << " " << setw( 32 ) << bitset<32>( n ) << '\n';
}


int main()
{
   unsigned n = 0;
   print( n );

   // flip each bit in turn
   for ( int i = 0; i < 32; i++ )
   {
      flipbit( n, i );
      print( n );
   }

   // Then unflip each bit in turn
   for ( int i = 31; i >= 0; i-- )
   {
      flipbit( n, i );
      print( n );
   }
}

           0 00000000000000000000000000000000
           1 00000000000000000000000000000001
           3 00000000000000000000000000000011
           7 00000000000000000000000000000111
          15 00000000000000000000000000001111
          31 00000000000000000000000000011111
          63 00000000000000000000000000111111
         127 00000000000000000000000001111111
         255 00000000000000000000000011111111
         511 00000000000000000000000111111111
        1023 00000000000000000000001111111111
        2047 00000000000000000000011111111111
        4095 00000000000000000000111111111111
        8191 00000000000000000001111111111111
       16383 00000000000000000011111111111111
       32767 00000000000000000111111111111111
       65535 00000000000000001111111111111111
      131071 00000000000000011111111111111111
      262143 00000000000000111111111111111111
      524287 00000000000001111111111111111111
     1048575 00000000000011111111111111111111
     2097151 00000000000111111111111111111111
     4194303 00000000001111111111111111111111
     8388607 00000000011111111111111111111111
    16777215 00000000111111111111111111111111
    33554431 00000001111111111111111111111111
    67108863 00000011111111111111111111111111
   134217727 00000111111111111111111111111111
   268435455 00001111111111111111111111111111
   536870911 00011111111111111111111111111111
  1073741823 00111111111111111111111111111111
  2147483647 01111111111111111111111111111111
  4294967295 11111111111111111111111111111111
  2147483647 01111111111111111111111111111111
  1073741823 00111111111111111111111111111111
   536870911 00011111111111111111111111111111
   268435455 00001111111111111111111111111111
   134217727 00000111111111111111111111111111
    67108863 00000011111111111111111111111111
    33554431 00000001111111111111111111111111
    16777215 00000000111111111111111111111111
     8388607 00000000011111111111111111111111
     4194303 00000000001111111111111111111111
     2097151 00000000000111111111111111111111
     1048575 00000000000011111111111111111111
      524287 00000000000001111111111111111111
      262143 00000000000000111111111111111111
      131071 00000000000000011111111111111111
       65535 00000000000000001111111111111111
       32767 00000000000000000111111111111111
       16383 00000000000000000011111111111111
        8191 00000000000000000001111111111111
        4095 00000000000000000000111111111111
        2047 00000000000000000000011111111111
        1023 00000000000000000000001111111111
         511 00000000000000000000000111111111
         255 00000000000000000000000011111111
         127 00000000000000000000000001111111
          63 00000000000000000000000000111111
          31 00000000000000000000000000011111
          15 00000000000000000000000000001111
           7 00000000000000000000000000000111
           3 00000000000000000000000000000011
           1 00000000000000000000000000000001
           0 00000000000000000000000000000000

[E0p9LyTq]

Huh? Your question is meaningless.

Look at his bio, he's posted a load of code there.

[Manga]

Guten Tag lol2020.

Was versuchst du zu tun?
Sende deinen Code.
Wir können helfen.

[lastchance]

Somehow I think his username says it all.