main()
{
int nitems;
char cline[MAXLINE];
char qchar, *malloc();
Queue *qcreate();
queue = qcreate( CHAR, 5 );
printf("ready\n");
while ( gets(cline) != NULL ) {
if ( !strcmp( cline, "remove" )) {
if ( qremove( &qchar, queue ) == FAILURE ) {
printf("queue empty\n");
continue;
}
else {
printf("%c\n", qchar);
}
}
else if ( !strcmp( cline, "read" )) {
if ( qread( &qchar, queue ) == FAILURE ) {
printf("queue exhausted\n");
continue;
}
else {
printf("%c\n", qchar);
}
}
else if ( !strcmp( cline, "reset" )) {
qreset( queue );
}
else if ( !strcmp( cline, "clear" )) {
qclear( queue );
}
else if ( !strncmp( cline, "delete ", 7 )) {
if ( sscanf( cline, "delete %d", &nitems ) != 1 ) {
printf("What?\n");
continue;
}
if ( qdelete( nitems, queue ) == FAILURE )
printf("too many items\n");
}
else {
qchar = cline[0];
if ( qadd( &qchar, queue ) == FAILURE )
printf("queue full\n");
}
}
while ( qremove( &qchar, queue ) == SUCCESS )
printf("%c\n");
printf("queue empty\n");
}
void main()
{
clrscr();
do
{
printf("\n1-->insert\n");
printf("2-->delete\n");
printf("3-->display\n");
printf("4-->exit\n");
printf("enter your choice\n");
scanf("%d",&choice);
switch(choice)
{
case 1:qinsert();
break;
case 2:qdelete();
break;
case 3:qdisplay();
break;
case 4:return;
}
}
while(choice!=4);
}
