%{
#include <stdio.h>
%}
 
%%
 
[0-9]+            { printf("Integer part recognized: %s\n", yytext); return 1; }
[0-9]*\.[0-9]+    { printf("Floating-point number recognized: %s\n", yytext); return 1; }
[0-9]+(\.[0-9]+)?([eE][+-]?[0-9]+) { printf("Floating-point number with exponent recognized: %s\n", yytext); return 1; }
.                 { return 0; }  // Invalid character
\n                { /* Do nothing on newline */ }
 
%%
 
int main() {
    printf("Enter a string to validate:\n");
    int token_type = yylex();
    if (token_type == 1) {
        printf("String is a valid floating-point number.\n");
    } else {
        printf("String is NOT a valid floating-point number.\n");
    }
    return 0;
}

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