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Unary +, - and * have higher precedence than the binary forms.
The operator () refers to function call.
Precedence determines the order in which operands are bound
to operators. Operators on the same line have the same precedence;
rows are in order of decreasing precedence.
C does not specify the order in which the operands of an
operator are evaluated. Similarly, the order in which function
arguments are evaluated is not specified. Examples:
x = f() + g(); a[i] = i++;
printf("%d %d\n",++n,power(2,n)); z = x / ++x;
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Programs should not depend upon the order of evaluation of
expressions, except as guaranteed by ANSI C for the following operators:
1. a, b comma operator (not the comma between arguments)
2. a && b logical and
3. a || b logical or
4. a ? b : c conditional
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All of these guarantee that expression a will be computed before
expression b (or c).
In addition, when a function-call takes place all arguments are
evaluated before control transfers to the function.
ANSI C++ guarantees that each full expression will be evaluted before
going on.
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