Here are the descriptions of the functions for performing formatted input. Prototypes for these functions are in the header file `stdio.h'.
scanffunction reads formatted input from the stream
stdinunder the control of the template string template. The optional arguments are pointers to the places which receive the resulting values.
The return value is normally the number of successful assignments. If
an end-of-file condition is detected before any matches are performed
(including matches against whitespace and literal characters in the
EOF is returned.
scanf, except that the input is read from the stream stream instead of
scanf, except that the characters are taken from the null-terminated string s instead of from a stream. Reaching the end of the string is treated as an end-of-file condition.
The behavior of this function is undefined if copying takes place between objects that overlap--for example, if s is also given as an argument to receive a string read under control of the `%s' conversion.
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