%{
int token_count = 0;
%}
 
%%
"int"|"float"|"char"|"return"|"if"|"else"|"while"|"for"|"do"|"void"    { token_count++; }
[a-zA-Z_][a-zA-Z0-9_]*    { token_count++; }   // identifiers
[0-9]+                    { token_count++; }   // integers
[=+\-*/%<>&|!^]           { token_count++; }   // operators
[{}();,]                  { token_count++; }   // symbols
[ \t\n]+                  { /* ignore whitespace */ }
.                         { token_count++; }   // any other character as token
%%
 
int main(int argc, char **argv)
{
    yylex();
    printf("Total number of tokens: %d\n", token_count);
    return 0;
}
 
int yywrap() {
    return 1;
}
 

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