Pass an EOF instead of pressing enter

[Camellia]

Hi all,

I'll get straight into it.

When I try to run the code:
.....
while (scanf("%c", &c) == 1)
printf("%c", c);
.....
I input "abcd" follows by an EOF(Ctrl + d) instead of pressing enter,
and the program prints "abcd" on the screen. And then I pass an EOF
signal the program ends.

My question is why doesn't the program end the first it encounters the
EOF after the "abcd"?
And also if I DO press enter after "abcd", do I pass the characters
'a', 'b', 'c', 'd', '\n' to the program?

Any suggestions are appreciated.

 

[Richard Tobin]

I input "abcd" follows by an EOF(Ctrl + d) instead of pressing enter,
and the program prints "abcd" on the screen. And then I pass an EOF
signal the program ends.

My question is why doesn't the program end the first it encounters the
EOF after the "abcd"?

This is really a question about your operating system, not about C.
Unix behaves as you describe - the EOF key only sends EOF after a
newline or another EOF.

And also if I DO press enter after "abcd", do I pass the characters
'a', 'b', 'c', 'd', '\n' to the program?

Yes. This is the usual situation. Pressing EOF without a newline
first is a way of sending a line without a newline at the end.

-- Richard