sim.rar_sim

#include <stdlib.h> #include <stdio.h> #include <time.h> //CISB352 Assignment 1 Part 1 //Leong Wa Chio D-B2-2709-0 main() { int i, j, k, rand1, rand2, total, Total_Ser_Time = 0, Total_Free_Time = 0, Line = 0, Max_Line = 0, ans1; int Int_Time[1000]; int Ser_Time[1000]; int Stay_Time[1000]; int Free_Time[1000]; int Arr_Time[1000]; int Ser_Star[1000]; int Wait_Time[1000]; int Ser_End[1000]; float ans2, ans3, ans4; //Star simulation srand((unsigned)(time(NULL))); for (i = 0; i < 1000; i++){ rand1 = (rand() % (100-1+1))+ 1; rand2 = (rand() % (100-1+1))+ 1; if ( i == 0){ Int_Time[i] = 0; }else{ if (rand1 >= 1 && rand1 <= 25){ Int_Time[i] = 1; }else if(rand1 >= 26 && rand1 <=65 ){ Int_Time[i] = 2; }else if(rand1 >= 66 && rand1 <=85 ){ Int_Time[i] = 3; }else{ Int_Time[i] = 4; } } if (rand2 >= 1 && rand2 <= 30){ Ser_Time[i] = 3; }else if(rand2 >= 31 && rand2 <=58 ){ Ser_Time[i] = 4; }else if(rand2 >= 59 && rand2 <=83 ){ Ser_Time[i] = 5; }else{ Ser_Time[i] = 6; } Total_Ser_Time = Total_Ser_Time + Ser_Time[i]; if (i == 0){ Stay_Time[i] = Ser_Time[i]; Free_Time[i] = 0; Arr_Time[i] = 0; Ser_Star[i] = 0; Wait_Time[i] = 0; Ser_End[i] = Ser_Star[i] + Ser_Time[i]; }else{ Stay_Time[i] = Stay_Time[i-1] - Int_Time[i] + Ser_Time[i]; Arr_Time[i] = Arr_Time[i-1] + Int_Time[i]; Ser_Star[i] = Ser_Star[i-1] + Ser_Time[i-1]; Wait_Time[i] = Ser_Star[i] - Arr_Time[i]; Ser_End[i] = Ser_Star[i] + Ser_Time[i]; if(Int_Time[i] - Stay_Time[i-1] > 0) Free_Time[i] = Int_Time[i] - Stay_Time[i-1]; else Free_Time[i] = 0; } } //End simulation //1.Maximum length of waiting line k = 0; for (i = 0; i < 1000; i++){ for (j = k + 1; j < 999 ; j++){ if (Ser_End[i] - Arr_Time[j] >= 0){ Line = Line + 1; k++; }else{ if (Line == 0) k++; if (Line > Max_Line){ Max_Line = Line; k++; Line--; } break; } } } ans1 = Max_Line; //End Q1 //2.Proportion of time server is busy for (i = 0; i < 1000; i++){ Total_Free_Time = Total_Free_Time + Free_Time[i]; } ans2 = 1-((float)Total_Free_Time/((float)Total_Free_Time + (float)Total_Ser_Time)); //End Q2 //3.Proportion of customers who spent 4 or more minutes in the system total = 0; for (i = 0; i < 1000; i++){ if (Stay_Time[i] >= 4){ total++; } } ans3 = (float)total/1000; //End Q3 //4.Average stay time per customer in the system total = 0; for (i = 0; i < 1000; i++){ total = total + Stay_Time[i]; } ans4 = (float)total/1000; //End Q4 //Show answers printf("Maximum length of waiting line = %d\n", ans1); printf("Proportion of time server is busy = %.4f\n", ans2); printf("Proportion of customers who spent 4 or more minutes in the system = %.4f\n", ans3); printf("Average stay time per customer in the system = %.4f Minutes\n", ans4); }