Search results: pointer in c

char * getenv (const char * name) function searches the environment string pointed to by the name parameter and returns the value associated with that string.

the int system (const char * command) function passes the command name or program name specified by the command to the host environment to be executed by the command processor and

void function * bsearch (const void * key, const void * base, nitems, size, int (* compar) (const void *, const void *)) looks for an array of nitems objects, its original member

the function int abs (int x) returns the absolute value of integer x.

div_t div function (int numer, int denom) divides numer numerator for denom.

function long int labs (long int x) returns the absolute value of x.

the function int rand (void) returns a random number in the range from 0 to rand_max.

the function void * calloc (so-phan-tu, kich-co-phan-tu) allocates the requested memory and returns a pointer to it. the difference between malloc and calloc is: malloc does not

the void free function (void * ptr) frees the previously allocated memory by a call to calloc, malloc, or realloc

the malloc () function allocates the requested memory and returns a pointer to it.

the realloc () function attempts to recover the memory block pointed to by the ptr pointer that was previously allocated with a call to malloc or calloc.

the abort () function stops executing the program abnormally.

the void exit (int status) function immediately terminates the calling process. any file opened by the process is closed and any child process is inherited by the initial process