Scanf Problem

[LJ]

K&R says that the scanf format string may contain ordinary characters,
which are expected to match the next non-white space character of the
input stream.

However when I am reading the date given as 25 /
12 / 1988 using scanf( "%d/%d/%d", &day, &month,
&year ); it is only reading the day. Why is it not reading the month
and year??

 

[John Gordon]

K&R says that the scanf format string may contain ordinary characters,
which are expected to match the next non-white space character of the
input stream.

However when I am reading the date given as 25 /
12 / 1988 using scanf( "%d/%d/%d", &day, &month,
&year ); it is only reading the day. Why is it not reading the month
and year??

Probably because your input contains spaces which the format string wasn't
told to look for.

 

[LJ]

Probably because your input contains spaces which the format string wasn't
told to look for.

That doesn't answer my question, '/' should match the next non-
whitespace character and in input that character is '/' only, so scanf
shud read all the three dates

 

[Ike Naar]

That doesn't answer my question, '/' should match the next non-
whitespace character and in input that character is '/' only, so scanf
shud read all the three dates

It does answer your question; you should tell scanf to skip
the whitespace.
Read your scanf documentation. Hint: "d% / %d / %d".

 

[Malcolm McLean]

That doesn't answer my question, '/' should match the next non-
whitespace character and in input that character is '/' only, so scanf
shud read all the three dates

The documentation you read is a bit confusing.

Whitespace matches whitespace, all other characters match themselves,
except for format fields introduced by %, and the % character itself.

 

[lawrence.jones]

K&R says that the scanf format string may contain ordinary characters,
which are expected to match the next non-white space character of the
input stream.

However when I am reading the date given as 25 /
12 / 1988 using scanf( "%d/%d/%d", &day, &month,
&year ); it is only reading the day. Why is it not reading the month
and year??

Because the paraphrase above is not correct: ordinary characters are
expected to match the next characters from the stream, they do not skip
leading whitespace.