操作系统原理源代码以及课件

#include"stdio.h" struct LNode { double arrivetime; double burst; int number; double finish; }; void main() { struct LNode A,B,C; //A.arrivetime=8.0; //B.arrivetime=9.0; //C.arrivetime=9.3; printf("\n请输入到达时间A.arrivetime="); scanf("%lf",&(A.arrivetime)); printf("\n请输入到达时间B.arrivetime="); scanf("%lf",&B.arrivetime); printf("\n请输入到达时间C.arrivetime="); scanf("%lf",&C.arrivetime); printf("\n请分别输入运行时间:\n"); scanf("%lf,%lf,%lf",&(A.burst),&(B.burst),&(C.burst)); printf("A\n"); A.finish=A.arrivetime+A.burst; printf("完成时间为:%lf\n",A.finish); if(B.arrivetime<=A.finish && C.arrivetime<=A.finish) { if(B.burst<C.burst) { printf("B\n"); B.finish=A.finish+B.burst; printf("完成时间为:%lf\n",B.finish); printf("C\n"); C.finish=C.burst+B.finish; printf("完成时间为:%lf\n",C.finish); } else { printf("C\n"); C.finish=C.burst+A.finish; printf("完成时间为:%lf\n",C.finish); printf("B\n"); B.finish=B.burst+C.finish; printf("完成时间为:%lf\n",B.finish); } } if(B.arrivetime<A.finish && C.arrivetime>A.finish) { printf("B\n"); B.finish=A.finish+B.burst; printf("完成时间为:%lf\n",B.finish); printf("C\n"); C.finish=C.burst+B.finish; printf("完成时间为:%lf\n",C.finish); } if(C.arrivetime<A.arrivetime && B.arrivetime>A.finish) { printf("C\n"); C.finish=C.burst+A.finish; printf("完成时间为:%lf\n",C.finish); printf("B\n"); B.finish=B.burst+C.finish; printf("完成时间为:%lf\n",B.finish); } if(B.arrivetime>A.finish && C.arrivetime>A.finish) { if(B.arrivetime<C.arrivetime) { printf("B\n"); B.finish=A.finish+B.burst; printf("完成时间为:%lf\n",B.finish); printf("C\n"); C.finish=C.burst+B.finish; printf("完成时间为:%lf\n",C.finish); } else { printf("C\n"); C.finish=C.burst+A.finish; printf("完成时间为:%lf\n",C.finish); printf("B\n"); B.finish=B.burst+C.finish; printf("完成时间为:%lf\n",B.finish); } } }