Lexical Analizer

/* TO IMPLEMENT LEXICAL ANALIZER IN C */

#include <stdio.h>

#include <conio.h>

#include <string.h>

#include <ctype.h>

void main()

{

            int i,j,lc;

            char *a[9][4]={

                                    "PRG","START" ," " ," "," " ,"USING" ,"*" ,"15"," ","L","1","FIVE",

                                    " ","A","1","FOUR"," ","ST","1","TEMP","FOUR ","DC","F","4",

                                    "FIVE","DC","F","5","TEMP","DS","1","F"," " ,"END"," "," ",

                        };

            clrscr();

            printf("\n \t\t LEXICAL ANALIZER \n");

            for(i=0;i< 9;i++)

            {

            for(j=0;j< 4;j++)

                        {

                        if(isalpha(*a[i][j]))

                                                printf("\n STRING : %s",a[i][j]);

                                    if(isdigit(*a[i][j]))

                                                printf("\n DIGIT : %s",a[i][j]);

                        }

                        printf("\n");

            }

            getch();

}


Output: