#include <stdio.h>
/* Illustrates the user of the three Boolean operators. */
void main (void) 
{
 int a = 1;
 int b = 2;
 int c = 3;
 /* Example 1. And. */
 if (a> 0 && b < 4) { printf("Test 1 is true\n"); } else { printf("Test 1 is false\n"); } /* Example 2. And. */ if (a> 0 && b> 4) {
 printf("Test 2 is true\n");
 }
 else {
 printf("Test 2 is false\n");
 }
 /* Example 3. Or. */
 if (a> 0 &#124;&#124; b> 4) {
 printf("Test 3 is true\n");
 }
 else {
 printf("Test 3 is false\n");
 }
 /* Example 4. Or. */
 if (a < 0 &#124;&#124; b> 4) {
 printf("Test 4 is true\n");
 }
 else {
 printf("Test 4 is false\n");
 }
 /* Example 5. Not. */
 if (! (a> 0 &#124;&#124; b> 4)) {
 printf("Test 3 is true\n");
 }
 else {
 printf("Test 3 is false\n");
 }
 /* Example 6. Not. */
 if (! (a < 0 &#124;&#124; b> 4)) {
 printf("Test 6 is true\n");
 }
 else {
 printf("Test 6 is false\n");
 }
 /* Example 7. A more complicated expression. */
 if ((a < 0 &#124;&#124; b> 0) && (b == 2 &#124;&#124; c == 2)) {
 printf("Test 7 is true\n");
 }
 else {
 printf("Test 7 is false\n");
 }
}
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