Compilare: user.c: In function ‘main’: user.c:20:3: warning: implicit declaration of function ‘strdup’ [-Wimplicit-function-declaration] cuv = strdup(next(line,cuv)); ^ user.c:20:7: warning: assignment makes pointer from integer without a cast [enabled by default] cuv = strdup(next(line,cuv)); ^ user.c:24:17: warning: initialization makes pointer from integer without a cast [enabled by default] char *aux = strdup(cuv); ^ user.c:14:32: warning: unused variable ‘fin’ [-Wunused-variable] char line[10130],*cuv,*fin; ^ user.c:12:9: warning: ignoring return value of ‘freopen’, declared with attribute warn_unused_result [-Wunused-result] freopen("convertor.out","w",stdout); ^