arrays - C++ 2d Vector subscript out of range error -

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currently in function, have method declares 2d vector. 

vector <vector<test> > path(int x, int y) //path function { vector <vector<test>> mazearray(column, vector<test>(row)); //declaring object     (int = 0; < column; a++)     {         (int b = 0; b < row; b++)         {             mazearray[b][a].setx(b);             mazearray[b][a].sety(a);         }     } }

for example, when tried run function, path(10,10).

the double loop works without error, if change path example, path(11,10) or path (11,13) or numbers not same both (int x , y), error vector subscript out of range present.

why so? can me on this? there way fix such value type acceptable? thanks.

the loop in function

vector <vector<test> > path(int x, int y) //path function { vector <vector<test>> mazearray(column, vector<test>(row)); //declaring object     (int = 0; < column; a++)     {         (int b = 0; b < row; b++)         {             mazearray[b][a].setx(b);             mazearray[b][a].sety(a);         }     } }

is wrong. have exchange b , in indices. there should be

    (int = 0; < column; a++)     {         (int b = 0; b < row; b++)         {             mazearray[a][b].setx(b);             mazearray[a][b].sety(a);         }     } }

take account meaning of function parameters unclear because not used.:)


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