[觀點][C語言]sizeof各類型別，struct > union == array > char*

#include <stdio.h>

union
{
    char chVals[16];
}uu;

struct
{
    char chVals[16];
    int a;
}ss;

int main()
{
    char chVals[16];
    char* pVals = chVals;

    printf("%lu\n", sizeof(ss));
    printf("%lu\n", sizeof(uu));
    printf("%lu\n", sizeof(chVals));
    printf("%lu\n", sizeof(pVals));

    return 0;
}

[answer]
20
16
16
4