#ifndef _STDLIB_H #define _STDLIB_H #include #ifdef __cplusplus extern "C" { #endif #define EXIT_FAILURE 1 #define EXIT_SUCCESS 0 void abort(void); int atexit(void (*function)(void)); void exit(int status); int atoi(const char *nptr); char *getenv(const char *name); void *malloc(size_t Size); void *realloc(void *Address, size_t Size); void *calloc(size_t Count, size_t Size); void free(void *Address); int system(const char *command); double atof(const char *nptr); extern void perror(const char *s); #ifdef __cplusplus } #endif #endif