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  1. #include <cstdio>
  2.  
  3. using namespace std;
  4.  
  5. inline void printBits(unsigned a){
  6.     for(int i = 31; i >= 0; --i)
  7.         printf(((a >> i) & 1) ? "1" : "0");
  8.     puts("");
  9. }
  10.  
  11. template<class X> void testShift(X a){
  12.     printf("Before:\n");
  13.     printBits(a);
  14.     a = (a >> 1);
  15.     printf("After:\n");
  16.     printBits(a);
  17.     puts("");
  18. }
  19.  
  20. int main(){
  21.  
  22.     printf("Signed 15\n");
  23.     testShift(15);
  24.     printf("Signed -15\n");
  25.     testShift(-15);
  26.  
  27.     printf("Unsigned 15\n");
  28.     testShift(unsigned(15));  
  29.     printf("Unsigned -15\n");
  30.     testShift(unsigned(-15));
  31.  
  32.     return 0;
  33. }
  34.  
Success #stdin #stdout 0.02s 2724KB
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stdin
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Standard input is empty
stdout
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Signed 15
Before:
00000000000000000000000000001111
After:
00000000000000000000000000000111

Signed -15
Before:
11111111111111111111111111110001
After:
11111111111111111111111111111000

Unsigned 15
Before:
00000000000000000000000000001111
After:
00000000000000000000000000000111

Unsigned -15
Before:
11111111111111111111111111110001
After:
01111111111111111111111111111000
https://ideone.com/Kc8fI
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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