bankers algorithm program in c code example

Example: program for bankers algorithm in c

/* *	Banker's Algorithm*  *       Author 	 : Shubham Sapkal*	*	Language : C**	compiler : gcc **//*<--------------PREPROCESSING STATEMENTS--------------->*/#include <stdio.h>#include <conio.h>/*<--------------MAIN FUNCTION--------------->*/ int main(){int Max[10][10], need[10][10], alloc[10][10], avail[10], completed[10], safeSequence[10];int p, r, i, j, process, count;count = 0;printf("Enter the no of processes : ");scanf("%d", &p);for(i = 0; i< p; i++)	completed[i] = 0;printf("\n\nEnter the no of resources : ");scanf("%d", &r);printf("\n\nEnter the Max Matrix for each process : ");for(i = 0; i < p; i++){	printf("\nFor process %d : ", i + 1);	for(j = 0; j < r; j++)		scanf("%d", &Max[i][j]);}printf("\n\nEnter the allocation for each process : ");for(i = 0; i < p; i++){	printf("\nFor process %d : ",i + 1);	for(j = 0; j < r; j++)		scanf("%d", &alloc[i][j]);	}printf("\n\nEnter the Available Resources : ");for(i = 0; i < r; i++)		scanf("%d", &avail[i]);		for(i = 0; i < p; i++)		for(j = 0; j < r; j++)			need[i][j] = Max[i][j] - alloc[i][j];		do{	printf("\n Max matrix:\tAllocation matrix:\n");	for(i = 0; i < p; i++)	{		for( j = 0; j < r; j++)			printf("%d  ", Max[i][j]);		printf("\t\t");		for( j = 0; j < r; j++)			printf("%d  ", alloc[i][j]);		printf("\n");	}	process = -1;	for(i = 0; i < p; i++)	{		if(completed[i] == 0)//if not completed		{			process = i ;			for(j = 0; j < r; j++)			{				if(avail[j] < need[i][j])				{					process = -1;					break;				}			}		}		if(process != -1)			break;	}	if(process != -1)	{		printf("\nProcess %d runs to completion!", process + 1);		safeSequence[count] = process + 1;		count++;		for(j = 0; j < r; j++)		{			avail[j] += alloc[process][j];			alloc[process][j] = 0;			Max[process][j] = 0;			completed[process] = 1;		}	}}while(count != p && process != -1);if(count == p){	printf("\nThe system is in a safe state!!\n");	printf("Safe Sequence : < ");	for( i = 0; i < p; i++)			printf("%d  ", safeSequence[i]);	printf(">\n");}else	printf("\nThe system is in an unsafe state!!");getch();}