YH3kc8 - Online Prolog Interpreter & Debugging Tool

%{ #include <stdio.h> %}
%% -?[0-9]+\.[0-9]+([eE][+-]?[0-9]+)? { printf("Floating point number: %s\n", yytext); } -?[0-9]+([eE][+-]?[0-9]+) { printf("Scientific notation number: %s\n", yytext); } -?[0-9]+ { printf("Integer number: %s\n", yytext); } [ \t\n]+ { /* Ignore whitespace */ } . { /* Ignore any other character */ } %%
int main() { printf("Enter a number:\n"); yylex(); return 0; }