Lex program to differentiate mobile number and land line number. (Note : Both mobile and land line numbers have 10 digits but land line number starts with digit 0 to 6 and mobile number has starting digit 7 to 9.)

%{

#include<stdio.h>

%}

%%

[7-9].*{9} {printf("Mobile no");}

[0-6].*{9} {printf("lanline no");}

.* {printf("invalid");}

%%

main()

{

yylex();

}

ScreenShot: