%{
  #include <stdio.h>
%}
 
%%
[0-9]+                 { printf("\nIt is an integer\n"); }
[0-9]+\.[0-9]+         { printf("\nIt is a decimal\n"); }
[a-zA-Z]+              { printf("\nIt is an alphabet\n"); }
[a-zA-Z0-9]+           { printf("\nIt is alphanumeric\n"); }
.                      { printf("Wrong option\n"); }
%%
 
int main() {
    printf("Enter the input: ");
    yylex();  // Correct spelling
    return 0;
}
 
int yywrap() {
    return 1;
}
 

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