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9.c
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9.c
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#include<stdio.h>
#include<stdlib.h>
void FIFO(char [ ],char [ ],int,int);
void lru(char [ ],char [ ],int,int);
void opt(char [ ],char [ ],int,int);
int main()
{
int ch,YN=1,i,l,f;
char F[10],s[25];
printf("\nEnter the no of empty frames: ");
scanf("%d",&f);
printf("\nEnter the length of the string: ");
scanf("%d",&l);
printf("\nEnter the string: ");
scanf("%s",s);
for(i=0;i<f;i++)
F[i]=-1;
do
{
printf("\n*********** MENU ***********");
printf("\n1:FIFO\n2:LRU \n3:EXIT");
printf("\nEnter your choice: ");
scanf("%d",&ch);
switch(ch)
{
case 1: for(i=0;i<f;i++)
F[i]=-1;
FIFO(s,F,l,f);
break;
case 2: for(i=0;i<f;i++)
F[i]=-1;
lru(s,F,l,f);
break;
case 3: exit(0);
}
printf("\n\nDo u want to continue IF YES PRESS 1\nIF NO PRESS 0 : ");
scanf("%d",&YN);
} while(YN==1);
return(0);
}
void FIFO(char s[],char F[],int l,int f)
{
int i,j=0,k,flag=0,cnt=0;
printf("\n\tPAGE\t FRAMES\t\t\t FAULTS");
for(i=0;i<l;i++)
{
for(k=0;k<f;k++)
{
if(F[k]==s[i])
flag=1;
}
if(flag==0)
{
printf("\n\t%c\t",s[i]);
F[j]=s[i];
j++;
for(k=0;k<f;k++)
printf(" %c",F[k]);
printf("\tPage-fault%d",cnt);
cnt++;
}
else
{
flag=0;
printf("\n\t%c\t",s[i]);
for(k=0;k<f;k++)
printf(" %c",F[k]);
printf("\tNo page-fault");
}
if(j==f)
j=0;
}
}
void lru(char s[],char F[],int l,int f)
{
int i,j=0,k,m,flag=0,cnt=0,top=0;
printf("\n\tPAGE\t FRAMES\t\t\t FAULTS");
for(i=0;i<l;i++)
{
for(k=0;k<f;k++)
{
if(F[k]==s[i])
{
flag=1;
break;
}
}
printf("\n\t%c\t",s[i]);
if(j!=f && flag!=1)
{
F[top]=s[i];
j++;
if(j!=f)
top++;
}
else
{
if(flag!=1)
{
for(k=0;k<top;k++)
F[k]=F[k+1];
F[top]=s[i];
}
if(flag==1)
{
for(m=k;m<top;m++)
F[m]=F[m+1];
F[top]=s[i];
}
}
for(k=0;k<f;k++)
printf(" %c",F[k]);
if(flag==0)
{
printf("\tPage-fault%d",cnt);
cnt++;
}
else
printf("\tNo page fault");
flag=0;
}
}