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prac-7.c
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prac-7.c
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#include<stdio.h>
#include<stdlib.h>
#include<string.h>
void match(char t);
void T();
void TS();
void F();
void ES();
void E();
char l;
void main()
{
printf("Enter string \n");
l=getchar();
printf("\n\n Production symbol\n");
printf("\tE\t%c\n",l);
E();
}
void match(char t)
{
if(t==l)
l=getchar();
else
printf("\nerror\n");
}
void E()
{
printf("\tT\t%c\n",l);
T();
printf("\tES\t%c\n",l);
ES();
}
void ES()
{
if(l=='+')
{
match('+');
printf("\tE\t%c\n",l);
E();
}
else
return;
}
void T()
{
printf("\tF\t%c\n",l);
F();
printf("\tTS\t%c\n",l);
TS();
}
void TS()
{
if(l=='*')
{
match('*');
printf("\tT\t%c\n",l);
T();
}
else
return;
}
void F()
{
if(l=='(')
{
match('(');
printf("\tE\t%c\n",l);
E();
match(')');
}
else
match('i');
}