int main()
{
FILE *f;
int *a, i = 0;
time_t t;
f = fopen("data", "r");
if (!f)
PERROR_RET("Unable to open file data for reading");
a = (int *) calloc(sizeof(int), MAX_NUM);
while (!feof(f)) {
fscanf(f, "%d", &a[i]);
i++;
}
start_timestamp();
insertsort(a, i - 1);
t = stop_timestamp();
printf("Sorting complete in %lu microseconds\n", t);
printarray(a, i - 1);
free(a);
fclose(f);
return 0;
}
int main(int argc, char *argv[])
{
FILE *f;
int *a, i = 0, key;
time_t t;
bool found;
if (argc < 2) {
fprintf(stderr, "Usage: %s <key>\n", argv[0]);
return 1;
}
f = fopen("data", "r");
if (!f)
PERROR_RET("Unable to open file data for reading");
sscanf(argv[1], "%d", &key);
a = (int *) calloc(sizeof(int), MAX_NUM);
while (!feof(f)) {
fscanf(f, "%d", &a[i]);
i++;
}
start_timestamp();
found = binarysearch(a, 0, i - 2, key);
t = stop_timestamp();
printf("Key %d was %s.\n",
key, found ? "found" : "not found");
printf("Search complete in %lu microseconds\n", t);
free(a);
fclose(f);
return 0;
}
/* e x e c _ S h e l l ( )
If args[0] is NULL, spawn a shell, otherwise execute the specified
command line.
Return the exit status of the program, or -1 if wait() or fork()
return an error.
*/
int
exec_Shell(char **args)
{
register int child_pid;
static char error_buf[32];
void (*intr_sig)(), (*quit_sig)();
if ( args[0] == NULL ) {
char *arg_sh = getenv( "SHELL" );
/* $SHELL, if set, DFL_SHELL otherwise. */
if ( arg_sh == NULL
/* Work around for process group problem. */
|| strcmp( arg_sh, TCSH ) == 0
|| strcmp( arg_sh, CSH ) == 0
)
arg_sh = DFL_SHELL;
args[0] = arg_sh;
args[1] = NULL;
}
intr_sig = signal( SIGINT, SIG_IGN );
quit_sig = signal( SIGQUIT, SIG_IGN );
switch ( child_pid = fork() ) {
case -1 :
PERROR_RET();
case 0 : /* Child process - execute. */
{
int tmp_fd;
if ((tmp_fd = open( "/dev/tty", O_WRONLY )) == -1) {
PERROR_RET();
}
(void) close( 2 );
if ( fcntl( tmp_fd, F_DUPFD, 2 ) == -1 ) {
PERROR_RET();
}
(void) execvp( args[0], args );
loc_Perror( args[0] );
bu_exit( errno, NULL );
}
default :
{
register int pid;
int stat_loc;
while ((pid = wait( &stat_loc )) != -1 && pid != child_pid)
;
prnt_Event( "\n" );
(void) signal( SIGINT, intr_sig );
(void) signal( SIGQUIT, quit_sig );
if ( pid == -1 ) {
/* No children. */
loc_Perror( "wait" );
return errno;
}
switch ( stat_loc & 0377 ) {
case 0177 : /* Child stopped. */
bu_log( "\"%s\" (%d) Child stopped.\n",
__FILE__,
__LINE__
);
return (stat_loc >> 8) & 0377;
case 0 : /* Child exited. */
return (stat_loc >> 8) & 0377;
default : /* Child terminated. */
bu_log( "\"%s\" (%d) Child terminated, signal %d, status=0x%x.\n",
__FILE__,
__LINE__,
stat_loc&0177,
stat_loc
);
return stat_loc&0377;
}
}
}
}
