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  1. #include <iostream>
  2. #include <string>
  3.  
  4. short f( unsigned int number, int start, int end)
  5. {
  6.     unsigned int mask = (1 << (end - start)) - 1;
  7.     return ( number >> start) & mask;
  8. }
  9.  
  10. int main() {
  11.  
  12.             short s1,s2,s3 = 0;
  13.             unsigned int addr = 4194624;
  14.  
  15.             s1 = f( addr, 20, 31);
  16.             s2 = f( addr, 8, 19);
  17.             s3 = f( addr, 0, 7);
  18.  
  19.          printf("%d\n", s1);
  20.          printf("%d\n", s2);
  21.          printf("%d\n", s3);
  22. 	return 0;
  23. }
Success #stdin #stdout 0s 3296KB
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4
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64
https://ideone.com/Q5mV94
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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