Notes

#include <stdio.h>
#include <stdlib.h>
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("nnEnter the no of resources : ");
scanf("%d", &r);

printf("nnEnter 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("nnEnter 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("nnEnter 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("tt");
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!!");

}