void PrintLine(char *, int);
void PrintLineWithPrefix(char *, char *, int);
void PrintLine(char *, int);
void PrintLineWithPrefix(char *, char *, int);
void (*print_usage_function)(void),
void (*print_version_function)(void));
void (*print_usage_function)(void),
void (*print_version_function)(void));
void *checked_malloc(unsigned int);
void *checked_calloc(unsigned int);
void *checked_realloc(void *, unsigned int);
void *checked_malloc(unsigned int);
void *checked_calloc(unsigned int);
void *checked_realloc(void *, unsigned int);