Notes on Data Type Conversion

• When casting between signed and unsigned integers of the same data size, the bit representation doesn’t change but the interpretation of the bits change.
• Positive integers have the same bit representation regardless if they are signed or unsigned, but of course the interpretation is different.
• For arithmetic operation:
  • If one of the operands is long double, then the other is converted to long double
  • Else if one of the operands is double, then the other is converted to double
  • Else if one of the operands is float, then the other is converted to float
  • Else if one of the operands is long int, then the other is converted to long int
  • Else if one of the operands is int, then the other is converted to int