while(scanf()!=eof)怎么用
时间: 2023-05-01 15:00:30 浏览: 104
"while(scanf()!=EOF)" 用法:
在这个循环中,scanf() 函数用于读取输入,当返回值不为 EOF (end-of-file) 时,循环继续执行。EOF 是文件结束的标志,通常是按下 "Ctrl + Z" 或 "Ctrl + D" 键。这个循环可以用于读取输入直到文件结束。
相关问题
while(scanf()!=eof)
while(scanf()!=EOF) 的意思是:当输入不是文件结束符时,执行循环。
scanf() 函数是从标准输入中读取数据,当读取到文件结束符时,返回 EOF。因此,当输入不是文件结束符时,循环会一直执行下去。
scanf() != EOF
This statement checks if the input operation to the scanf() function was successful or not. The scanf() function returns the number of input items successfully matched and assigned, which is not equal to the EOF (End of File) constant if an input operation is successful. Therefore, if the input operation is successful, scanf() != EOF will evaluate to true, while if the input operation fails, scanf() != EOF will evaluate to false.