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  1. #include <iostream>
  2.  
  3. int main()
  4. {
  5. 	uint8_t sizeOfEachVariableInBits[] = {4, 2, 1, 1};
  6. 	uint8_t numOfStoredVariables = sizeof(sizeOfEachVariableInBits);
  7. 	uint8_t variablesReadFromBits[numOfStoredVariables];
  8. 	uint8_t rshCounter = 0;
  9.  
  10. 	uint8_t testValue = 0b10101110;
  11.  
  12. 	/* expected result:
  13. 	variablesReadFromBits[0] = 0b00001110
  14. 	variablesReadFromBits[1] = 0b00000010
  15. 	variablesReadFromBits[2] = 0b00000000
  16. 	variablesReadFromBits[3] = 0b00000001
  17. 	*/
  18.  
  19. 	for ( uint8_t i = 0; i < numOfStoredVariables; i++ )
  20. 	{
  21. 		variablesReadFromBits[i] = (testValue >> rshCounter) & ((1 << sizeOfEachVariableInBits[i]) - 1);
  22. 		rshCounter += sizeOfEachVariableInBits[i];
  23. 	}
  24.  
  25. 	// display result
  26. 	for ( uint8_t i = 0; i < numOfStoredVariables; i++ )
  27. 	{
  28. 		printf( "variablesReadFromBits[%hhu] = 0b", i );
  29.  
  30. 		for ( int8_t j = 7; j >= 0; j-- )
  31. 		{
  32. 			printf( "%hhu", ( variablesReadFromBits[i] >> j ) & 1 );
  33. 		}
  34.  
  35. 		printf( "\n" );
  36. 	}
  37.  
  38. 	return 0;
  39. }
Success #stdin #stdout 0s 5692KB
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stdin
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Standard input is empty
stdout
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variablesReadFromBits[0] = 0b00001110
variablesReadFromBits[1] = 0b00000010
variablesReadFromBits[2] = 0b00000000
variablesReadFromBits[3] = 0b00000001
https://ideone.com/6knDFu
language:
C++ 4.3.2 (gcc-4.3.2)
created:
5 years ago
visibility:
secret

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