Code

 Header...
/*
 * Demonstrate a flawed attempt to dynamically
 * allocate an array of floats
 */

// Attempt to allocate an array of n floats
// Contains a serious error
 float * badArrayAlloc(int n){
   ... 

»  float farray[n];

»  return farray;// Ooops!
}

 int main(){
   ... 

»  int i, n;
»  float *ar=NULL;

»  printf("How many floats?\n");
»  scanf("%d", &n);

»  ar=badArrayAlloc(n);

»  for (i=0; i<n; ++i) 
    ari=i;
  
»  for (i=0; i<n; ++i) 
    printf("%d %g\n", i, ari);

»  return 0;
}