text1.c: In function `main': text1.c:9: `bool' undeclared (first use in this function) text1.c:9: (Each undeclared identifier is reported only once text1.c:9: for each function it appears in.) text1.c:9: parse error before "linie" text1.c:42: `linie' undeclared (first use in this function) text1.c:8: warning: unused variable `cmax'