Question

Greetings everyone. Having an issue compiling my script containing the following function. Three errors occur, all on the same line where I set distance += to distances [][]:

error C2108: subscript is not of integral type error C2108: subscript is not of integral type error C2297: ‘+=’ : illegal, right operand has type ‘double (*)[15]’

Assistance would be much appriciated.

double S_initial;  double distances [15][15];  double order [15]; void Initialize()  {     double x, y ,z;      double distance = 0;      for (int i = 0; i <= 14; i++)     {         x =  order [i];         y =  order [i + 1];          distance += distances [x][y];     }      S_initial = distance; } 

Answer 1

Well, the array subscripts x and y are not of an integral type like int, but of type double:

double x, y, z; ... distance += distances[x][y]; 

And something like the 1.46534th element of an array doesn’t make sense, so the compiler complains.