learningc

Learning C

I am now learning C programming myself, and I put those materials I have covered here, and hope they can help your learning process as well.

printf format identifiers
- A whitespace character: [ \t\n\x0B\f\r] (\xhh The character with hexadecimal value 0xhh)
- Whether plain chars are signed or unsigned is machine-dependent, but printable characters are always positive.
C, like most languages, does not specify the order in which the operands of an operator are evaluated. (The exceptions are &&, ||, ?:, and ','.)
Similarly, the order in which function arguments are evaluated is not specified.
The line
- nl = nw = nc = 0;
- sets all three variables to zero. This is not a special case, but a consequence of the fact that an assignment is an expression with the value and assignments associated from right to left. It's as if we had written
  - nl = (nw = (nc = 0));