c++ - Creating an array2D class crashing when compiling -

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repeated question

in these lines

array2d(int xres, int yres){     float **xtable; 

you declaring local variable. class member variable of same name remains uninitialized , use later.

remove second line.

also, member variables xres , yres not initialized either.

use:

array2d(int xresin, int yresin) : xres(xresin), yres(yresin) {    xtable = new float*[yres];    for(int i=0;i < yres;i++) {       xtable[i] = new float[xres];    } } 

also, change

void getsize(int &xres, int &yres){} 

to

void getsize(int &xresout, int &yresout) {    xresout = this->xres;    yresout = this->yres; } 

as expand class, keep in mind the rule of three , implement copy constructor , copy assignment operator.

array2d(array2d const& copy) { ... } array2d& operator=(array2d const& rhs) { ... }