int initstack(sqstack *s) S-base=(int *)malloc (STACK INIT SIZE*sizeof (int)) s>top=s->base s-stacksize=STACK INIT size return OK Void pop(sgstack *s, int *e if(s->top==s->base)return ERROR >top)int initstack(sqstack *s) { s->base=(int *)malloc (STACK_INIT_SIZE*sizeof(int)); s->top=s->base; s->stacksize=STACK_INIT_SIZE; return OK; } void pop(sqstack *s,int *e) { if(s->top==s->base)return ERROR; *e=*(--s->top); }