do-while循环中scanf中的错误 [英] error in the scanf in the do-while loop

问题描述

#include< stdio.h>

void main（）

{

int i，n，month，day，calcday， calcmonth;

char flag =''y'';

char weekday [] [10] = {" Friday"，" Saturday"" Sunday" ，星期一，星期二，星期三，星期四;};

int usermonth [] = {31,28,31,30,31,30,31， 31,30,31,30,31};

do

{

printf（"输入日期（日，月）： "）;

scanf（"％d％d"，& day，& month）;

calcday = day-1;

calcmonth = month-1;

for（i = 0; i< calcmonth; i ++）

{

calcday + = usermonth [ i];

}

n = calcday％7;


printf（"％d /％d / 2010 is％ s \ n"，day，month，weekday [n]）;


printf（你想继续吗（是/否）？;


scanf（"％c"& flag）;

}


while（flag =='' y''）;


}

#include<stdio.h>
void main()
{
int i, n, month, day, calcday, calcmonth;
char flag=''y'';
char weekday[][10]={"Friday","Saturday","Sunday","Monday","Tuesday", "Wednesday","Thursday"};
int usermonth[]={31,28,31,30,31,30,31,31,30,31,30,31};
do
{
printf("Enter the date (Day, Month): ");
scanf("%d %d",&day ,&month);
calcday=day-1;
calcmonth=month-1;
for(i=0;i<calcmonth;i++)
{
calcday+=usermonth[i];
}
n=calcday%7;

printf("%d/%d/2010 is %s \n",day, month, weekday[n]);

printf("Do you want to continue (y/n)? ");

scanf("%c",&flag);
}

while(flag==''y'');

}

推荐答案

转载。

好​​吧，如果问题是做什么这取决于你需要达到的目标。如果没关系，我会继续使用scanf（％c），直到我得到y或n。

Reproduced.
Well, if the question was "what to do" it depends on what do you need to achieve. If it doesn''t matter, i''d continue with scanf("%c") till I get either ''y'' or ''n''.

使用getch（）而不是scanf（）它会正常工作

use getch() instead of scanf() it will work fine

我无法理解你mr.newb16

i希望每次scanf for the flag to知道它是在循环中完成还是离开

i can''t understand you mr.newb16
i want in each time scanf for the flag to know if it complete in the loop or get out

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