本程序是在Turbo C 2.0环境下编写的，预计在其他C程序编译系统中也没问题。 #define null 0#define M "         Menu\n\n1.Creat a process\n2.Destroy a process\n3.Blockaprocess\n4.Wakeup a process\n5.Suspend a process\n6.Active a process\n7.Observe the processes\n\nPlease select the item you want to realize:" struct PCB{char name; int ko; int cha;} struct PCB pcb[10];int i=0; void creat(){char a; int b; printf("Please input the name of the process:"); scanf("%c",&a); printf("\nPlease input the ko of the process:"); scanf("%d",&b); i++; pcb[i].name=a; pcb[i].ko=b; pcb[i].cha=1; printf(M);} void destroy(){char a; int j; printf("Select a process you want to destroy:"); scanf("%c",&a); printf("\n"); for(j=1;j<=10;j++) {if(pcb[j].name==a)  {pcb[j].name=0;   pcb[j].ko=0;   pcb[j].cha=0;   printf("Process %c has been destroied.");  }  else printf("There isn't process %c existed!"); } printf("\n"); printf(M);} void block(){char a; int j; printf("Please tell me which process you want to block:"); scanf("%c",&a); printf("\n"); for(j=1;j<=10;j++) {if(pcb[j].name==a)  {if(pcb[j].cha==1)   {pcb[j].cha=4;    pcb[j].ko++;    printf("Operation block has been finished!");   }   else if(pcb[j].cha==2)        {pcb[j].cha=3;         pcb[j].ko++;         printf("Operation block has been finished!");        }        else printf("There is no process can be blocked!");  } } printf("\n"); printf(M);} void wakeup(){char a; int j; printf("Please tell me which process you want to wakeup:"); scanf("%c",&a); printf("\n"); for(j=1;j<=10;j++) {if(pcb[j].name==a)  {if(pcb[j].cha==3)   {pcb[j].cha=2;    pcb[j].ko--;    printf("You have wakeup process %c.",a);   }   else if(pcb[j].cha==4)        {pcb[j].cha=1;         pcb[j].ko--;         printf("You have wakeup process %c.",a);        }        else printf("There is no process can be wakedup!");  } } printf("\n"); printf(M);} void suspend(){char a; int j; printf("Which process do you want to suspend?Select:"); scanf("%c",&a); printf("\n"); for(j=1;j<=10;j++) {if(pcb[j].name==a)  {if(pcb[j].cha==2)   {pcb[j].cha=1;    pcb[j].ko++;    printf("You have suspend process %c.",a);   }   else if(pcb[j].cha==3)        {pcb[j].cha=4;         pcb[j].ko++;         printf("You have suspend process %c.",a);        }        else if(pcb[j].cha==5)             {pcb[j].cha=1;              pcb[j].ko++;              printf("You have suspend process %c.",a);             }             else printf("You could suspend none!");  } } printf("\n"); printf(M);} void active(){char a; int j; printf("Please tell me which process you want to active:"); scanf("%c",&a); printf("\n"); for(j=1;j<=10;j++) {if(pcb[j].name==a)  {if(pcb[j].cha==1)   {pcb[j].cha=2;    pcb[j].ko--;    printf("You have active process %c.",a);   }   else if(pcb[j].cha==4)        {pcb[j].cha=3;         pcb[j].ko--;         printf("You have active process %c.",a);        }        else printf("There is no process can be actived!");  } } printf("\n"); printf(M);} void run(){struct PCB *p; char t; int j,m,k; printf("The processes will run in the order of ko(lower earlier,higher later):\n"); for(j=1,p=pcb;p!=null;j++,p++) {if(p[j].ko>p[j+1].ko)  {t=p[j].name;   p[j].name=p[j+1].name;   p[j+1].name=t;   m=p[j].cha;   p[j].cha=p[j+1].cha;   p[j+1].cha=m;   k=p[j].ko;   p[j].ko=p[j+1].ko;   p[j+1].ko=k;  } } for(p=pcb,j=1;p!=null;p++) {printf("Process %c:",p[j].name);  printf("\tko:%d\tcha:%d",p[j].ko,p[j].cha);  printf("\n"); }  printf("\n"); printf(M); }  observe(){int j; for(j=1;j!=null;j++) {printf("Process %c:",pcb[j].name);  printf("\tko:%d\tcha:%d",pcb[j].ko,pcb[j].cha);  printf("\n"); }} exit(){exit(1);} main(){int a,k; for(k=1;k<=10;k++) {pcb[i].name=0;  pcb[i].ko=0;  pcb[i].cha=0; } printf("         Menu\n\n"); printf("1.Creat a process\n"); printf("2.Destroy a process\n"); printf("3.Block a process\n"); printf("4.Wakeup a process\n"); printf("5.Suspend a process\n"); printf("6.Active a process\n"); printf("7.Observe the processes\n"); printf("8.Exit\n"); printf("\n\n"); printf("\n\nPlease select the item you want to realize:"); scanf("%d",&a); printf("\n\n"); if(a!=null) switch(a) {case 1:creat();break;  case 2:destroy();break;  case 3:block();break;  case 4:wakeup();break;  case 5:suspend();break;  case 6:active();break;  case 7:observe();break;  case 8:exit();break; } getch();}

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