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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5.     int zahl = 5;
  6.     //cin >> zahl;
  7.     int anzahlDerBytes = sizeof zahl; //4
  8.     int anzahlDerBits = 8 * anzahlDerBytes; //32
  9.     for(int k = anzahlDerBits-1; k >= 0 ; --k) {
  10.     	cout << "k == "  << k << "; 1 << k ==  0b"  << string(anzahlDerBits-1-k, '0')  << '1' <<  string(k, '0') << "; " 
  11.                  << zahl << " & (1 << k) == "  <<  (zahl & (1 << k))  << '\n';
  12.         if(zahl & (1 << k)) {
  13.             cout << "1\n";
  14.         }
  15.         else {
  16.             cout << "0\n";
  17.         }
  18.     }
  19.     cout << endl;
  20. }
  21.  
Success #stdin #stdout 0.01s 5444KB
comments (?)
stdin 
Standard input is empty
stdout 
k == 31; 1 << k ==  0b10000000000000000000000000000000; 5 & (1 << k) == 0
0
k == 30; 1 << k ==  0b01000000000000000000000000000000; 5 & (1 << k) == 0
0
k == 29; 1 << k ==  0b00100000000000000000000000000000; 5 & (1 << k) == 0
0
k == 28; 1 << k ==  0b00010000000000000000000000000000; 5 & (1 << k) == 0
0
k == 27; 1 << k ==  0b00001000000000000000000000000000; 5 & (1 << k) == 0
0
k == 26; 1 << k ==  0b00000100000000000000000000000000; 5 & (1 << k) == 0
0
k == 25; 1 << k ==  0b00000010000000000000000000000000; 5 & (1 << k) == 0
0
k == 24; 1 << k ==  0b00000001000000000000000000000000; 5 & (1 << k) == 0
0
k == 23; 1 << k ==  0b00000000100000000000000000000000; 5 & (1 << k) == 0
0
k == 22; 1 << k ==  0b00000000010000000000000000000000; 5 & (1 << k) == 0
0
k == 21; 1 << k ==  0b00000000001000000000000000000000; 5 & (1 << k) == 0
0
k == 20; 1 << k ==  0b00000000000100000000000000000000; 5 & (1 << k) == 0
0
k == 19; 1 << k ==  0b00000000000010000000000000000000; 5 & (1 << k) == 0
0
k == 18; 1 << k ==  0b00000000000001000000000000000000; 5 & (1 << k) == 0
0
k == 17; 1 << k ==  0b00000000000000100000000000000000; 5 & (1 << k) == 0
0
k == 16; 1 << k ==  0b00000000000000010000000000000000; 5 & (1 << k) == 0
0
k == 15; 1 << k ==  0b00000000000000001000000000000000; 5 & (1 << k) == 0
0
k == 14; 1 << k ==  0b00000000000000000100000000000000; 5 & (1 << k) == 0
0
k == 13; 1 << k ==  0b00000000000000000010000000000000; 5 & (1 << k) == 0
0
k == 12; 1 << k ==  0b00000000000000000001000000000000; 5 & (1 << k) == 0
0
k == 11; 1 << k ==  0b00000000000000000000100000000000; 5 & (1 << k) == 0
0
k == 10; 1 << k ==  0b00000000000000000000010000000000; 5 & (1 << k) == 0
0
k == 9; 1 << k ==  0b00000000000000000000001000000000; 5 & (1 << k) == 0
0
k == 8; 1 << k ==  0b00000000000000000000000100000000; 5 & (1 << k) == 0
0
k == 7; 1 << k ==  0b00000000000000000000000010000000; 5 & (1 << k) == 0
0
k == 6; 1 << k ==  0b00000000000000000000000001000000; 5 & (1 << k) == 0
0
k == 5; 1 << k ==  0b00000000000000000000000000100000; 5 & (1 << k) == 0
0
k == 4; 1 << k ==  0b00000000000000000000000000010000; 5 & (1 << k) == 0
0
k == 3; 1 << k ==  0b00000000000000000000000000001000; 5 & (1 << k) == 0
0
k == 2; 1 << k ==  0b00000000000000000000000000000100; 5 & (1 << k) == 4
1
k == 1; 1 << k ==  0b00000000000000000000000000000010; 5 & (1 << k) == 0
0
k == 0; 1 << k ==  0b00000000000000000000000000000001; 5 & (1 << k) == 1
1
https://ideone.com/beXsCq
language:
C++14 (gcc 8.3)
created:
2 years ago
visibility:
secret

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