lab-7 (11/14)
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#include<stdio.h> #include<stdlib.h> int main() { float IAT[30], AT[30], ST[30], TSB[30], WTQ[30], TSE[30]; float TCSS[30], ITS[30], TST, avg_wt, TWQ, TIAT, POWC, POIS, TITS, avg_st, avg_iat, tiat, tst; IAT[0]=0.0; int wq=0,N=1,n,i,cnt=0,ch; printf("how many simulations do you want"); scanf("%d",&n); printf("Enter the arrival time ?"); for (i=1;i<n;i++){ scanf("%f",&IAT[i]); tiat+=IAT[i]; } printf("Enter the service time"); for (i=0;i<n;i++){ scanf("%f",&ST[i]); tst+=ST[i]; } AT[0]=0.0; TSB[0]=0.0; WTQ[0]=0.0; TSE[0]=ST[0]; TCSS[0]=ST[0]; ITS[0]=0.0; TST=ST[0]; TIAT=0; printf("C.N\tIAT \t AT\t ST\t TSB\tWQT\t TSE\tTCSS\t ITS\n "); printf("\t%d \t0.2%f \t0.2%f \t0.2%f \t0.2%f \t0.2%f \t0.2%f \t0.2%f \t0.2%f \n", N,IAT[0],AT[0],ST[0],TSB[0],WTQ[0],TSE[0],TCSS[0],ITS[0]); for (i=1;i<n;i++){ AT[i]=IAT[i]+AT[i-1]; if ((ST[i-1]+ TSB[i-1])> AT[i]){ TSB[i]= ST[i-1]+TSB[i-1]; } else{ TSB[i]=AT[i]; WTQ[i]=TSB[i]-AT[i]; if (WTQ[i]>0){ wq+=WTQ[i]; cnt++; } TSE[i]=TSB[i]+ST[i]; TCSS[i]=ST[i]+WTQ[i]; ITS[i]=TSB[i]-TSE[i-1]; TWQ+=wq; TST=TST+ST[i]; TIAT+=IAT[i]; TITS+=ITS[i]; N++; printf("\t%d \t %6 \t0.2%f \t0.2%f \t0.2%f \t0.2%f \t0.2%f \t0.2%f \t0.2%f \n", N,IAT[i],AT[i],ST[i],TSB[i],WTQ[i],TSE[i],TCSS[i],ITS[i]); } } do { printf("Enter Average waiting time . Probability of wait of customer . Probability of idle server . Average service time . Average time between Arrival \n"); scanf("%d",&ch); switch(ch){ case 1: avg_wt=TWQ/(float)N; printf("Average waiting 0.2f",avg_wt); break; case 2: POWC=TIAT/((float)N-1); printf("Probability of wait of customer=%0.2f",POWC); break; case 3: POIS=TITS/TSE[i-1]; printf("Probability of idle server =%0.2f",POIS); break; case 4: avg_st=tst/(float)N; printf("Average service time=%0.2f",avg_st); break; case 5: avg_iat=tiat /(float)(N-1); printf("Average inter arival time=%0.2f",avg_iat); break; default: printf("Invalid Choice"); exit(0); } } while(1); return 0; }
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