有时间片，优先级的进程调度 struct PCB{ int pname; int pri; int runtime; int waittime; struct PCB *next; }pcb[7]; /*高优先级就绪队列头指针*/ struct PCB *Hready; /*低优先级队列头指针*/ struct PCB *Lready; /*等待队列头指针*/ struct PCB *wait;