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COMPARES.C
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1994-05-15
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2KB
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49 lines
/* Chapter 4 - Program 5 - COMPARES.C */
void main() /* This file will illustrate logical compares */
{
int x = 11, y = 11, z = 11;
char a = 40, b = 40, c = 40;
float r = 12.987, s = 12.987, t = 12.987;
/* First group of compare statements */
if (x == y) z = -13; /* This will set z = -13 */
if (x > z) a = 'A'; /* This will set a = 65 */
if (!(x > z)) a = 'B'; /* This will change nothing */
if (b <= c) r = 0.0; /* This will set r = 0.0 */
if (r != s) t = c/2; /* This will set t = 20 */
/* Second group of compare statements */
if (x = (r != s)) z = 1000; /* This will set x = some positive
number and z = 1000 */
if (x = y) z = 222; /* This sets x = y, and z = 222 */
if (x != 0) z = 333; /* This sets z = 333 */
if (x) z = 444; /* This sets z = 444 */
/* Third group of compare statements */
x = y = z = 77;
if ((x == y) && (x == 77)) z = 33; /* This sets z = 33 */
if ((x > y) || (z > 12)) z = 22; /* This sets z = 22 */
if (x && y && z) z = 11; /* This sets z = 11 */
if ((x = 1) && (y = 2) && (z = 3)) r = 12.00; /* This sets
x = 1, y = 2, z = 3, r = 12.00 */
if ((x == 2) && (y = 3) && (z = 4)) r = 14.56; /* This doesn't
change anything */
/* Fourth group of compares */
if (x == x); z = 27.345; /* z always gets changed */
if (x != x) z = 27.345; /* Nothing gets changed */
if (x = 0) z = 27.345; /* This sets x = 0, z is unchanged */
}
/* Result of execution
(No output from this program.)
*/