linux c 智能指针

#include <stdio.h>
#include <stdlib.h>

typedef struct SmartPointer {
    int *ptr;
} SmartPointer;

SmartPointer* create_smart_pointer(int size) {
    SmartPointer *sp = (SmartPointer *)malloc(sizeof(SmartPointer));
    if (sp) {
        sp->ptr = (int *)malloc(size * sizeof(int));
    }
    return sp;
}

void destroy_smart_pointer(SmartPointer *sp) {
    if (sp) {
        free(sp->ptr);
        free(sp);
    }
}

int main() {
    SmartPointer *sp = create_smart_pointer(10);
    // 使用sp->ptr进行操作...
    destroy_smart_pointer(sp);
    return 0;
}

#include <stdio.h>
#include <stdlib.h>

#define SMART_POINTER(type, name, size) \
    type *name = (type *)malloc(size * sizeof(type)); \
    if (!name) { fprintf(stderr, "Memory allocation failed\
"); exit(EXIT_FAILURE); }

#define FREE_POINTER(name) do { free(name); name = NULL; } while(0)

int main() {
    SMART_POINTER(int, ptr, 10);
    // 使用ptr进行操作...
    FREE_POINTER(ptr);
    return 0;
}