value of TRUE???

[Farrell Woods]

In article <987 at infmx.UUCP> kevinf at infmx.UUCP (Kevin Franden) writes:

>given: 	:The if() statement will evaluate to true provided that
>	 the argument does not evaluate to 0.  (ie a=3; if (a)...)

Expressions have values in C.  Since there is no boolean type in C,
expressions that evaluate to non-zero values are taken as "true",
and zero-valued as "false".

>What does if (a=3) evaluate to?

The expression "a = 3" has the value of 3, which is non-zero and therefore
"true".  Therefore:

	if (a = 3)
		printf("true!\n");

will always execute the printf().
-- 
Farrell T. Woods				Voice:  (508) 392-2471
Concurrent Computer Corporation			Domain: ftw at masscomp.com
1 Technology Way				uucp:   {backbones}!masscomp!ftw
Westford, MA 01886				OS/2:   Half an operating system