stdlib.h

   1 #include <stddef.h>
   2
   3 #define RAND_MAX                0x7fffffff
   4
   5 void *malloc(long n);
   6 void free(void *m);
   7
   8 int atoi(char *s);
   9 long atol(char *s);
  10 int abs(int n);
  11 long labs(long n);
  12
  13 void exit(int status);
  14 void abort(void);
  15 char *getenv(char *name);
  16 void qsort(void *a, int n, int sz, int (*cmp)(void *, void *));
  17 int mkstemp(char *t);
  18 int system(char *cmd);
  19
  20 void srand(unsigned int seed);
  21 int rand(void);