Because carriage returns are also characters.

scanf_s("%d%c "，

& amp

);

Add a after this sentence.

getchar()；

You are obviously two specifiers. How to assign a value to a variable and receive a character with %*c (but not assign a value)?

Finally, the usage of scanf_s and scanf is different and requires three parameters. The last one is the number of bytes to read (determined by sizeof).

It is recommended to replace all scanf_s in the program with scanf.

Then add it before the first line of code.

#define _CRT_SECURE_NO_WARNINGS

Shielding warning