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#include<stdio.h>
#include<conio.h>
#include<string.h>
void main()
{
char t[5],nt[10],p[5][5],first[5][5],temp;
int i,j,not,nont,k=0,f=0;
clrscr();
printf("\nEnter the no. of Non-terminals in the grammer:");
scanf("%d",&nont);
printf("\nEnter the Non-terminals in the grammer:\n");
for(i=0;i<nont;i++)
{
scanf("\n%c",&nt[i]);
}
printf("\nEnter the no. of Terminals in the grammer: ( Enter e for absiline ) ");
scanf("%d",¬);
printf("\nEnter the Terminals in the grammer:\n");
for(i=0;i<nott[i]=='$';i++)
{
scanf("\n%c",&t[i]);
}
for(i=0;i<nont;i++)
{
p[i][0]=nt[i];
first[i][0]=nt[i];
}
printf("\nEnter the productions :\n");
for(i=0;i<nont;i++)
{
scanf("%c",&temp);
printf("\nEnter the production for %c ( End the production with '$' sign )
:",p[i][0]);
for(j=0;p[i][j]!='$';)
{
j+=1;
scanf("%c",&p[i][j]);
}
}
for(i=0;i<nont;i++)
{
printf("\nThe production for %c -> ",p[i][0]);
for(j=1;p[i][j]!='$';j++)
{
printf("%c",p[i][j]);
}
}
for(i=0;i<nont;i++)
{
f=0;
for(j=1;p[i][j]!='$';j++)
{
for(k=0;k<not;k++)
{
if(f==1)
break;
if(p[i][j]==t[k])
{
first[i][j]=t[k];
first[i][j+1]='$';
f=1;
break;
}
else if(p[i][j]==nt[k])
{
first[i][j]=first[k][j];
if(first[i][j]=='e')
continue;
first[i][j+1]='$';
f=1;
break;
}
}
}
}
for(i=0;i<nont;i++)
{
printf("\n\nThe first of %c -> ",first[i][0]);
for(j=1;first[i][j]!='$';j++)
{
printf("%c\t",first[i][j]);
}
}
getch();
}
What else can I help you with?
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