編譯器(Ex: GCC, clang, VC++...)+目標環境(跟開發平台不同的話需列出)
GCC
問題(Question)：
我設計一個程式每秒去檢查某檔案是否存在
每10秒顯示目前經過秒數
預期的正確結果(Expected Output)：
每秒顯示一次資訊
錯誤結果(Wrong Output)：
10秒才一次性顯示全部資訊
程式碼(Code)：(請善用置底文網頁, 記得排版)
int main(){
FILE *fid_rd;
int count=0,accu=0;
while(1){
fid_rd=fopen(".running","r");
sleep(1);
if(!fid_rd){
printf("finish\n");
break;
}else{
printf(".");
if(count==9){
count=0;
accu+=10;
printf("Simulator has took %d secs\n",accu);
}else
count++;
fclose(fid_rd);
}
return 0;
}
--
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推
12/02 22:24, , 1F
12/02 22:24, 1F
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12/02 22:38, , 2F
12/02 22:38, 2F
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12/02 22:39, , 3F
12/02 22:39, 3F
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12/02 22:57, , 4F
12/02 22:57, 4F
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12/02 22:57, , 5F
12/02 22:57, 5F
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12/02 22:58, , 6F
12/02 22:58, 6F
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12/02 23:07, , 7F
12/02 23:07, 7F
※ 編輯: jacky1989 (49.214.130.241), 12/02/2016 23:13:26
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12/02 23:30, , 8F
12/02 23:30, 8F
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12/02 23:38, , 9F
12/02 23:38, 9F
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12/03 00:13, , 10F
12/03 00:13, 10F
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12/03 00:14, , 11F
12/03 00:14, 11F
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12/03 00:22, , 12F
12/03 00:22, 12F
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12/03 00:43, , 13F
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12/03 00:44, , 14F
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12/03 00:44, , 15F
12/03 00:44, 15F
想請問為什麼需要fflush呢?
※ 編輯: jacky1989 (123.192.57.91), 12/03/2016 02:50:12
※ 編輯: jacky1989 (123.192.57.91), 12/03/2016 02:52:03
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12/03 08:25, , 16F
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12/03 08:27, , 17F
12/03 08:27, 17F
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12/03 08:27, , 18F
12/03 08:27, 18F
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12/03 15:29, , 19F
12/03 15:29, 19F