how to freeing pointers using macro in c

Question

I want to write macro in c code to freeing many pointers like this :

FREE(ptr1, ptr2, ptr3, ptr4, ptrx);

For me, this is better than

Answer 1

You can pass variable number of arguments in macro. Following code works fine:

#define FREE_ALL(...) \
do { \
    int i=0;\
    void *pta[] = {__VA_ARGS__}; \
    for(i=0; i < sizeof(pta)/sizeof(void*); i++) \
    { \
        free(pta[i]); \
    }\
} while(0)