On Thursday May 28 2015 17:50, in comp.lang.c, "Skybuck Flying"
<[email protected]> wrote:
> Hello,
>
> I was just coding and ran into a little logic problem which is as follows:
>
> There are two booleans/variables which can be either false or true.
>
> The desired thrutle table is:
>
> A = input
> B = input
> C = output
>
> A B C:
> -------
> F F T
> F T F
> T F T
> T T T
Seems simple enough: C == A || !B
18:38 $ cat testlogic.c
#include <stdio.h>
#include <stdlib.h>
/*
** A = input
** B = input
** C = output
**
** A B C:
** -------
** F F T
** F T F
** T F T
** T T T
*/
int testlogic(int a, int b)
{
return (a || !b);
}
int main(void)
{
/* A B C */
int ttable[4][3] = { {0,0,1}, /* F F T */
{0,1,0}, /* F T F */
{1,0,1}, /* T F T */
{1,1,1} /* T T T */
};
int rc = EXIT_SUCCESS;
int i, max;
for (i = 0, max = sizeof(ttable) / sizeof(ttable[0]); i < max ; ++i)
if (testlogic(ttable[i][0],ttable[i][1]) != ttable[i][2])
{
printf("testlogic failed on test %d\n",i);
rc = EXIT_FAILURE;
}
if (rc == EXIT_SUCCESS) puts("SUCCESS");
return rc;
}
18:39 $ cc -o testlogic testlogic.c
18:39 $ ./testlogic
SUCCESS
--
Lew Pitcher
"In Skills, We Trust"
PGP public key available upon request
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