c++ - Findfactorial was not found in this scope -


every time run qt program, gives following error:

findfactorial not found in scope

could suggest why? have function in mainwindow.cpp

int findfactorial(int x){     if(x == 1){         return 1;     } else {         return x*findfactorial(x-1);     } }

mainwindow.h : 

class mainwindow : public qmainwindow {     q_object  public:     explicit mainwindow(qwidget *parent = 0);     bool ok = false;     int findfactorial(int x);     ~mainwindow();  private slots:      void on_clear_button_clicked();      void on_sqr_button_clicked();      void on_exp_two_button_clicked();      void on_pi_button_clicked();      void on_ceil_button_clicked();      void on_factorial_button_clicked();  private:     ui::mainwindow *ui; };

you have explicitly scope/namespace function belongs using scope resolution operator.

int mainwindow::findfactorial(int x){     if(x == 1){         return 1;     } else {         return x*findfactorial(x-1);     } }

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