Case with multiple CIN inputs in a C + + program

In many C + + programs, we will have to enter the operation several times. In this case, you will encounter only the first CIN statement being executed, and the subsequent CIN is not executed. This is because the data entered by CIN is placed in the CIN buffer, and after the first use of CIN, the buffer has already saved the data, and all the data in the buffer must be emptied if you want to use CIN later, you can use the following two sentences to clear:

Cin.clear ();

Cin.sync ();

The use of these two sentences to clear the buffer immediately after each CIN statement ensures that we can use CIN in time to enter data.

Case with multiple CIN inputs in a C + + program