操作系统进程管理实验例程

#include<stdio.h> #define TRUE 1 #define FALSE 0 #define MAXPRI 100 #define NIL -1 struct { int id; char status; int nextwr; int priority; } pcb [3]; struct { int value; int firstwr; } sem[2]; char savearea[3][4],addr; int i,s1,s2,seed, exe=NIL; init() { int j; for (j=0;j<3;j++) { pcb[j].id=j; pcb[j].status='r'; pcb[j].nextwr=NIL; printf("\n process%d priority?",j+1); scanf("%d",&i); pcb[j].priority=i; } sem[0].value=1; ...... ..... ..... .....