如何解决C中的While循环迭代问题
此C代码存在一个小错误。在用户输入导致程序进入while
循环(错误处理)之后,while循环迭代两次?!
与scanf()
或printf()
有关系吗?
输出:
Would you like to interact with this program today? (y/n
Please answer the question by typing 'y' or 'n' and hitting enter
Would you like to interact with this program today? (y/n)
Please answer the question by typing 'y' or 'n' and hitting enter
Would you like to interact with this program today? (y/n)
代码:
printf("\nWould you like to interact with this program today? (y/n)\n");
char answer; // recording the user's answer in a character
scanf("%c",&answer);
while ((answer != 'y') && (answer != 'n')) { // keeps looping twice???
printf("\nPlease answer the question by typing 'y' or 'n' and hitting enter\n");
printf("Would you like to interact with this program today? (y/n)\n");
scanf("%c",&answer);
}
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