#include<stdio.h>
//输入输出函数
int main()
{
int ch = 0;
while ((ch = getchar()) != eof)//eof=end of file文件结束标志
putchar(ch);
}
return 0;
//while((ch=getchar())!="\n") {;}的应用
int ret = 0;
char password[20] = { 0 };
printf("请输入密码:");
scanf_s("%s", password);
while ((ch = getchar()) != '\n')
;
printf("请确认(y/n):>");
ret = getchar();
if (ret == 'y')
printf("确认成功");
else
printf("放弃确认");
/*
for循环
for(初始化:判断:调整)
不在循环体内更改变量,防止循环失去控制
建议前闭后开区间
*/
int i = 0;
for (i = 1; i <=10; i++)
printf("%d\n",i);
do_while循环
int i = 1;
do
i++;
while (i <= 10);