Is there any way to jump back to function onbutton1() to read in a and b again before going down to onbutton2 function?Code:int ga, gb; //global variable void CSortingDlg::Onbutton1() { m_intA = ga; m_intB = gb; . . . } void CSortingDlg::Onbutton2() { int a, b; a = ga; b = gb; if ( ( a == 0 ) || ( b == 0 ) ) { MessageBox ( "Please enter a and b 1st.", "Error.", MB_ICONSTOP); . . . }