Array not assignable

Question

I wanted to assign a boolean value to a two-dimensional boolean array, but the compiler showed an error

bool Amass[100][80];

Amass[1,1] = true; //even so I see only an error

Voting to close as a typo. `Amass[1,1]` should be `Amass[1][1]` — NathanOliver, Jan 28 '20 at 18:40
Please provide error messages (verbatim) as part of your question. `Amass[1,1]` is not how multidimensional arrays are indexed in C++. Correct is `Amass[1][1] = true;`. — walnut, Jan 28 '20 at 18:40

score 1 · Accepted Answer · answered Jan 28 '20 at 18:46

You have declared a two-dimensional array

bool Amass[100][80];

However in this statement

Amass[1,1] = true;

in the subscript operator expression you are using the comma operator. Its result is the right-most operand. That is the statement is equivalent to

Amass[1] = true;

So in the left side of the assignment there is used a one-dimensional array.

It seems you mean

Amass[1][1] = true;

1 Answers1