Class operators

Question

I\'m having a problem to make the code:

void main(){
     Matrix c(rows,cols);//rows & cols are int numbers
     c[0][0]=2//the line that I\'m having a probl         


        

Answer 1

There are no operator [][], but operator[]. So that one should return something for which you can use [] too (pointer or proxy class).

In your case, you might simply do:

double* operator[](int i) { return mat[i]; }
const double* operator[](int i) const { return mat[i]; }

For more complicated cases, you have to return a proxy class.