Size of an array of floats

Question

What is the size of this array?

float a[10];

Answer 1

It equals sizeof a

Answer 2

Have ever heard about sizeof. It must help.

Answer 3

Enough to 10 floats. It depends of implementation. In most implemetations of C compilers float is 4 bytes long, so it will be at least 4 * 10 bytes. In C there is sizeof, use it!

Answer 4

Look for a C manual (sizeof keyword):

#include <stdio.h>

int main(void)
{
  float a[10];

  printf("sizeof float %d\n", sizeof(float) );
  printf("sizeof array %d\n", sizeof(a) );
  printf("array size %d\n", sizeof(a)/sizeof(a[0]) ); // sizeof(a[0]) is the same with sizeof(float)
  return 0;
}

Hope it is not too hard.