G-Fact 6

The C standard C99 allows inline functions and variable-length-arrays. So following functions are valid in C99 compliant compilers.

Example for inline functions

inline int max(int a, int b)
{
  if (a > b)
    return a;
  else
    return b;
}

a = max (x, y);
/*
  This is now equivalent to
  if (x > y)
    a = x;
  else
    a = y;
*/

Example for variable length arrays

float read_and_process(int n)
{
    float   vals[n];

    for (int i = 0; i < n; i++)
        vals[i] = read_val();
    return process(vals, n);
}

References:
http://en.wikipedia.org/wiki/C99
http://en.wikipedia.org/wiki/Variable-length_array
http://en.wikipedia.org/wiki/Inline_function

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