1 #include <stdio.h> 2 #include <signal.h> 3 4 5 void 6 handle_USR1 (int sig) 7 { 8 } 9 10 int value; 11 12 int 13 main (void) 14 { 15 int my_array[3] = { 1, 2, 3 }; /* break main */ 16 17 value = 7; 18 19 #ifdef SIGUSR1 20 signal (SIGUSR1, handle_USR1); 21 #endif 22 23 printf ("value is %d\n", value); 24 printf ("my_array[2] is %d\n", my_array[2]); 25 26 { 27 int i; 28 for (i = 0; i < 5; i++) 29 value++; /* increment value */ 30 } 31 32 return 0; /* after loop */ 33 } 34 35