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

#define MAL_S(type, size) (type*) malloc(sizeof(type)*size)
#define MAL(type) MAL_S(type, 1)
#define LAL_S(type, varname, size) type *varname = MAL(type)
#define LAL(type, varname) type *varname = MAL_S(type, 1)

#define SZ 4

int main()
{
    /* allocating integer array with size of SZ */

    // allocate variable without being lazy
    int *a = malloc(sizeof(int)*SZ);

    // macros are slaves
    LAL_S(int, b, SZ);
    // ^ identical to int *b = malloc(sizeof(int)*SZ);

    printf("'a' mem address: %p\n'b' mem address: %p\n", &a, &b);

    free(a);
    free(b);
    // ^ free allocated memory
}