在函数中使用指针并修改main（）

Question

I would like to pass a pointer as an argument into a function that normalizes the vector pointer that was passed as an argument.

Here are the functions:

float norm(Vector *v) {
    float len;
    len = sqrt(pow(v->x, 2.0) + pow(v->y, 2.0) + pow(v->z, 2.0));
    return len;
}

Vector normalize(Vector *vec){
  Vector normVec;
  //calls norm function which also takes a pointer of vector type as argument
  float norm = norm(&vec);

  normVec.x = vec->x/norm;
  normVec.y = vec->y/norm;
  normVec.z = vec->z/norm;

  return normVec;
}

I get this error: error: called object 'norm' is not a function or function pointer.
How can I get this function running smoothly?

Answer 1

That is because your float norm variable shadows the norm() function.
Name one of them something else.

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Also, vec is already a pointer, no need to take its address ( &vec ) when you pass it to norm()