Uses a function prototype to enforce strong type checking


void sqr_it(int *i); /* prototype */

int main(void)
{
  int x;

  x = 10;
  sqr_it(x);  /* type mismatch */

  return 0;
}

void sqr_it(int *i)
{
  *i = *i * *i;
}

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Uses a function prototype to enforce strong type checking : Function « Function « C / ANSI-C

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