无法弄清楚如何使用的getchar（）;用C

本文介绍了无法弄清楚如何使用的getchar（）;用C的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 #include <stdio.h> int main(void) { char F,C; printf("Do you have a Fever? y/n\n"); F = getchar(); printf("Do you have a runny nose or cough? y/n\n"); C = getchar(); printf("Here are the results you input:\n"); printf("Do you have a fever?"); putchar(F); printf("\nDo you have a runny nose or cough?"); putchar(C); return 0; }

这首的getchar的code的输入结果（）; ，然后退出，而无需等待更多的输入。这是为什么？

The code inputs results from first getchar(); and then exits without waiting for more input. Why is that?

推荐答案

使用，而循环每个的getchar后（）如果您想只处理一个字符

Use a while loop after each getchar() if you want to process only one character

printf("Do you have a Fever? y/n\n"); F = getchar(); while((F = getchar()) != EOF && F != '\n') // This will eat up all other characters ; printf("Do you have a runny nose or cough? y/n\n"); C = getchar(); while((C = getchar()) != EOF && C != '\n') ;