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37 changes: 37 additions & 0 deletions Algorithms/OS Algorithms/First_Fit_Algorithm
Original file line number Diff line number Diff line change
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#This code is for the implementation for of first fit algoithm in OS
#include <stdio.h>
void implimentFirstFit(int blockSize[], int blocks, int processSize[], int processes)
{

int allocate[processes]; for(int i = 0; i < processes; i++)
{
allocate[i] = -1;
}

for (int i = 0; i < processes; i++)
{
for (int j = 0; j < blocks; j++) {
if (blockSize[j] >= processSize[i])
{
allocate[i] = j;
blockSize[j] -= processSize[i]; break;
}
}
}

printf("\nProcess No.\tProcess Size\tBlock no.\n"); for (int i = 0; i < processes; i++)
{
printf("%d \t\t\t %d \t\t\t", i+1, processSize[i]); if (allocate[i] != -1)
printf("%d\n",allocate[i] + 1); else
printf("Not Allocated\n");
}
}


void main()
{
int blockSize[] = {300, 50, 100};
int processSize[] = {100, 60, 90};
int m = sizeof(blockSize)/sizeof(blockSize[0]);
int n = sizeof(processSize)/sizeof(processSize[0]); implimentFirstFit(blockSize, m, processSize, n);
}