Encountered this in a C program.
scanf(" %[^\n]", str);
Please explain how it works and why?
scanf format string consists of two parts:
'\n', etcetera) in the input, and
%[^\n]conversion specification, which matches a string of all characters not equal to the new line character (
'\n') and stores it (plus a terminating
Note however that if the input (after the leading spaces, and before the first newline character) is longer than 99 characters, this function exhibits undefined behaviour, because
str can only hold 100
chars including the terminating
'\0' character. A safer alternative is:
scanf(" %99[^\n]", str);