Preview:
//	optionMenu = getMenuOption();
//	
//	while(optionMenu > -1){
//		switch(optionMenu){
//			case 1:
//				addJob(h, j);
//				break;
//			
//			case 2:
//				retrieveJob(h, j);
//				break;
//				
//			case 3:
//				cout << "Option 3..." << endl;
//				break;
//				
//			case 4:
//				cout << "Option 4..." << endl;
//				break;
//			
//			case 5:
//				cout << "Bye!";
//				exit(0); //terminate program
//				break;
//				
//			default:
//				cout << "ERROR! Invalid option! Please try again..." << endl;
//				break;
//		}
//		
//		optionMenu = getMenuOption();
//	}


int getMenuOption(){
	int menuOption=0;
		
	cout << "Please enter number to select: ";
	cin >> menuOption;
	
	//error check
	while(!cin.good()){
		//report problem when user input in not numeric
		cout << "ERROR! Faulty input! Please try again..." << endl;
		
		//clear stream
		cin.clear();
		cin.ignore(INT_MAX, '\n');
		
		//get input again
		cout << "Please enter number to select: ";
		cin >> menuOption;
	}
	
	//clear stream
	cin.clear();
	cin.ignore(INT_MAX, '\n');
		
	return menuOption;
}
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