C 程序经典900例(上)

#include <stdio.h> #include <malloc.h> void some_function(size_t size) { int i; char *pointer; char stack_fix[1]; stack_fix[0] = NULL; if ((pointer = alloca(size)) == NULL) printf("Error allocating %u bytes from the stack\n", size); else { for (i = 0; i < size; i++) pointer[i] = i; printf("Allocatd and used a buffer of %u bytes\n", size); } } void main(void) { some_function(1000); some_function(32000); some_function(65000); }