%{
/* Version vom 17.5.2004, in der Vorlesung interaktiv erstellt. */
#include <stdio.h>
int akku = 0;
%}
%option main
%%
"I"{1,3}	{ akku += yyleng ; }
"IV"		{ akku += 4; }
"V"		{ akku += 5; }
"IX"		{ akku += 9; }
"X"{1,3}	{ akku += yyleng * 10 ; }
"XL"		{ akku += 40; }
"L"		{ akku += 50; }
"XC"		{ akku += 90; }
"C"{1,3}	{ akku += yyleng * 100 ; }
"CD"		{ akku += 400; }
"D"		{ akku += 500; }
"CM"		{ akku += 900; }
"M"+		{ akku += yyleng * 1000 ; }
.|\n		{ if (akku) { printf("%d", akku); akku = 0; } ECHO; }