%{
#include <stdio.h>
 
int macro_count = 0;
int header_count = 0;
%}
 
%%
 
^[ \t]*#define      { macro_count++; }
^[ \t]*#include     { header_count++; }
 
.|\n                ;   /* Ignore all other input */
 
%%
 
int main() {
    printf("Enter C program (Press Ctrl+D to end input):\n\n");
    yylex();
 
    printf("\nNumber of macros defined: %d\n", macro_count);
    printf("Number of header files included: %d\n", header_count);
 
    return 0;
}
 
int yywrap() {
    return 1;
}

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