Simulation of Banking Algorithm (Mini Project) - Beginners / Lab Assignments Source Code in C

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Home » C Home » Beginners / Lab Assignments Home » Simulation of Banking Algorithm (Mini Project)

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Title	Simulation of Banking Algorithm (Mini Project)
Author	HEMAMALINI.R
Author Email	jasmine_hm4021 [at] yahoo.co.in
Description
Category	C » Beginners / Lab Assignments
Hits	388933
Code	Select and Copy the Code
Code : #include<stdio.h> struct process { int max[10],allocate[10],need[10],nallocate[10],nneed[10]; int finish; }p[10]; int avail[10],navail[10],req[10]; int i,j,m,n,sum,s,pno; int generate(); void newstatus(); void main() { int k,l; printf(" ENTER THE TOTAL NUMBER OF RESOURCES : "); scanf("%d",&n); printf(" ENTER THE NUMBER OF AVAILABLE UNITS IN EACH RESOURCE TYPE : "); for(i=0;i<n;i++) scanf("%d",&avail[i]); printf(" ENTER THE TOTAL NUMBER OF PROCESSES : "); scanf("%d",&m); printf(" ENTER THE MAXIMUM NUMBER OF UNITS NEEDED IN "); printf(" EACH RESOURCE TYPE FOR EACH PROCESS: "); for(i=0;i<m;i++) for(j=0;j<n;j++) scanf("%d",&p[i].max[j]); printf(" ENTER THE ALLOCATED NUMBER OF UNITS IN "); printf(" EACH RESOURCE TYPE FOR EACH PROCESS: "); for(i=0;i<m;i++) for(j=0;j<n;j++) { scanf("%d",&p[i].allocate[j]); p[i].need[j]=p[i].max[j]-p[i].allocate[j]; } for(j=0;j<n;j++) { sum=0; for(i=0;i<m;i++) sum+=p[i].allocate[j]; avail[j]=avail[j]-sum; } newstatus(); printf(" THE NEED MATRIX IS: "); for(i=0;i<n;i++) printf("R%d ",i+1); for(i=0;i<m;i++) { printf(" "); for(j=0;j<n;j++) printf("%d ",p[i].need[j]); } l=generate(); if(l==0) printf(" THE SYSTEM IS NOT IN THE SAFE STATE!!! "); else { newstatus(); printf(" ENTER THE PROCESS NUMBER AND ITS REQUEST: "); scanf("%d",&pno); pno=pno-1; k=s=0; for(i=0;i<n;i++) { scanf("%d",&req[i]); if((req[i]>avail[i])\|\|(req[i]>p[pno].need[i])) k=1; if(req[i]!=p[pno].need[i]) s=1; } if(k==1) printf(" THE REQUEST CANNOT BE GRANTED!!! "); else if(k==0) { for(i=0;i<n;i++) { p[pno].nneed[i]=(p[pno].nneed[i])-req[i]; p[pno].nallocate[i]=(p[pno].nallocate[i])+req[i]; navail[i]=navail[i]-req[i]; if(s==0) navail[i]=navail[i]+p[pno].nallocate[i]; } printf(" "); if(s==0) { printf(" P%d ",pno+1); p[pno-1].finish=1; } l=generate(); if(l==0) printf(" THE REQUEST CANNOT BE GRANTED!!! "); if(l==1) printf(" THE REQUEST IS GRANTED!!! "); } } } void newstatus() { for(i=0;i<n;i++) navail[i]=avail[i]; for(i=0;i<m;i++) { for(j=0;j<n;j++) { p[i].nallocate[j]=p[i].allocate[j]; p[i].nneed[j]=p[i].need[j]; } p[i].finish=0; } } int generate() { int l,q,k,f; l=0; while(1) { for(i=0;i<m;i++) { if(p[i].finish==0) { k=1; for(j=0;j<n;j++) if(p[i].nneed[j]>navail[j]) k=0; if(k==0) l++; else if(k==1) { printf("P%d ",i+1); for(j=0;j<n;j++) navail[j]+=p[i].nallocate[j]; p[i].finish=1; } } } if(l>m) return 0; q=0; for(f=0;f<m;f++) if(p[f].finish==1) q++; if(q==m) { printf(" ABOVE IS THE SAFE SEQUENCE AND THE SYSTEM IS IN SAFE STATE!!! "); return 1; } } }

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