Mohanraj
#include<stdio.h>
#include<conio.h>
int isiden(char*); int
second(char*); int third();
void main()
{
char *str;
int i = -1;
clrscr();
printf("\n\n\t\tEnter
the desired String: ");
do
{
++i;
str[i]
= getch();
if(str[i]!=10
&& str[i]!=13)
printf("%c",str[i]);
if(str[i] == '\b')
{
--i;
printf(" \b");
}
}while(str[i] !=
10 && str[i] !=
13);
if(isident(str))
printf("\n\n\t\tThe given strig
is an identifier");
else
getch();
}
printf("\n\n\t\tThe given string is not an identifier");
//To Check whether the given
string is identifier
or not
//This function acts like first
stage of dfa int isident(char *str)
{
if((str[0]>='a' && str[0]<='z') ||
(str[0]>='A' && str[0]<='Z'))
{
return(second(str+1));
}
else
}
return 0;
//This
function acts as second stage of dfa int
second(char *str)
{
if((str[0]>='0'
&& str[0]<='9')
|| (str[0]>='a' && str[0]<='z') || (str[0]>='A' && str[0]<='Z'))
{
return(second(str+1)); //Implementing the loop from second stage to
second stage
}
else
{
if(str[0] == 10 || str[0] == 13)
{
return(third(str));
}
}
}
{
return 0;
}
Posted in: C / C++ Program
1 comments:
Hi there,
I'm looking for a C code which takes a C file as a input and generate a table of different identifiers and their value.
e.g int num = 12;
char ch = "D";
output:
------------------
| Ident | Values|
------------------
| num | 12 |
| ch | D |
------------------
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