当下面的代码来到cin语句:如果我输入-1,它仍然运行我的invalidSelectorError()发现最后其他如果部分...即使该部分应该通过如果mainMenuSelector等于-1。奇怪的,如果陈述行为
为什么?
(顺便说一句,invalidSelectorError()运行后,while循环包围的一切工作和程序终止如预期。)
int mainMenuSelector;
while(mainMenuSelector != -1){
cout << "--- MAIN MENU -----------------" << endl;
cout << "[1] Create New Contact" << endl;
cout << "[2] View Existing Contacts" << endl;
cout << "[3] View or Edit Data Fields" << endl;
cout << "-------------------------------" << endl;
cout << "Or just press ENTER to quit." << endl;
cout << "-------------------------------" << endl;
cout << "Selection: ";
mainMenuSelector = -1;
cin >> mainMenuSelector;
cin.ignore();
if(mainMenuSelector == 1){
contactCreator();
}else if(mainMenuSelector == 2){
contactViewer();
}else if(mainMenuSelector == 3){
dataFieldViewer();
}else if(mainMenuSelector != 1 ||
mainMenuSelector != 2 ||
mainMenuSelector != 3 ||
mainMenuSelector != -1
){
invalidSelectorError();
}
}
return 0;