Count Bits in Numeric Types

#include <stdio.h>
#define SIZE 5

#define m_count(arr, res, type)\
    {\
       unsigned type mask;\
       type temp;\
       int i, count = 0;\
       type *p = (type *)arr;\
       \
       for(i=0; i < SIZE ; i++)\
       {\
          mask = 1;\
          temp = p[i];\
          while(mask)\
          {\
            if(temp & mask)\
            {\
               count++;\
            }\
            mask = mask << 1;\
          }\
       }\
       res = count;\
    }

typedef enum {t_int, t_double, t_char} types;

int my_count(void *, types);

int main()
{
    int i ,temp;
    int arr[SIZE];

    printf("Please enter numbers: ");
    for(i=0; i<SIZE; i++)
    {
        scanf("%d", &temp);
        arr[i] = temp;
    }

    my_count((void *)arr, t_int);
    return 0;
}

int my_count(void *data, types t)
{
    int res = 0;
    if(t == t_int)
    {
        m_count(data, res, int);
    }
    if(t == t_char)
    {
        m_count(data, res, char);
    }

    printf("res bits: %d ", res);

}