Dynamic Memory Allocation (cont)

Example:int * vec;if ((vec=(int*) malloc(ARR_LNG*sizeof(int)))==NULL){ fprintf(stderr,”cannot allocate\n”); exit(1);}if ((vec = (int*)realloc(vec, NEW_ARR_LNG*sizeof(int))) ==NULL) { fprintf(stderr,”cannot allocate\n”); exit(1);}

Dynamically allocated memory (only) can be returned to the system using the function “void *free(old_ptr)”

Example: int * vec; if ((vec=(int*) malloc(ARR_LNG*sizeof(int)))==NULL) { fprintf(stderr,”cannot allocate\n”); exit(1); } if ((vec = (int*)realloc(vec, NEW_ARR_LNG*sizeof(int))) ==NULL) { fprintf(stderr,”cannot allocate\n”); exit(1); }