int get_int(void) { int input; char ch; while ((scanf_s("%d", &input)) != 1) { while ((ch = getchar()) != '\n') /*当scanf的返回值不为1时,ch是自动获取输入的input???*/ putchar(ch); printf(" is not an inter.\n"); /*putchar输出的字符与printf输出的字符不换行????*/ printf("please enter an integer v...