#ifndef DB_PROBLEMS_H #define DB_PROBLEMS_H #ifdef __cplusplus extern "C" { #endif int open_problems_db(); void close_problems_db(); int add_problem(const char* problem, const char* answer, const char* check_error, int* result); int delete_problems(int problems_id); int get_problem(int id, char** result, char** result2, char** result3); int modify_problem(int problems_id, const char* problem, const char* answer, const char* check_error); int check_answer(int problems_id, const char* answer, int* result); int has_problem(int problems_id, int* result); int all_problems(char** result); #ifdef __cplusplus } #endif #endif // DB_PROBLEMS_H