In this program we have to count the number words in a string . This is a lex program so first we have to know how to run a lax program in ubuntu and what is the format of the program . The lex files are save in file_name.l and for running a lex file we use some command which are given below:-
Code:-
%{
#include<stdio.h>
#include<string.h>
int i=0;
%}
%%
([a-zA-Z0-9])* {i++;}
"\n" {printf("Number of words %d",i);}
%%
int main()
{
yylex();
return 0;
}
Output:-
One more thing you have to know for terminate the program press Ctrl+d then it will print the output.
this is easycodingzone
Number of words 3
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