2017年9月2日 · @powersource97, %.*s means you are reading the precision value from an argument, and precision is the maximum number of characters to be printed, and %*s you are reading the width value from an argument, which is the minimum number os characters to …

2012年12月6日 · That is: \s matches a space( ) or a tab(\t) or a line(\n) break or a vertical tab(\x0B sometimes referred as \v) or a form feed(\f) or a carriage return(\r) . \\s*,\\s* It says zero or more occurrence of whitespace characters, followed by a comma and then followed by zero or more occurrence of whitespace characters.

/\S/.test(string) returns true if and only if there's a non-space character in string. Tab and newline ...

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@user3705478 Both will produce the same results, even if there would be multiple spaces after each other. The difference lies in the way it get's handled. If you would have a group of (for example) 3 spaces directly following each other \\s+ takes that group and turns the whole it into a "", while \\s would proces every space on its own. –

2022年11月11日 · Using %s in scanf without an explcit field width opens the same buffer overflow exploit that gets did; namely, if there are more characters in the input stream than the target buffer is sized to hold, scanf will happily write those extra characters to memory outside the buffer, potentially clobbering something important.

2012年3月26日 · The Windows command prompt (cmd.exe) has an optional /s parameter, which modifies the behavior of /c (run a particular command and then exit) or /k (run a particular command and then show a shell prompt). This /s parameter evidently has something to do with some arcane quote handling.

2022年3月1日 · %s indicates a conversion type of string when using Python's string formatting capabilities. More specifically, %s converts a specified value to a string using the str() function. Compare this with the %r conversion type that uses the repr() function for value conversion.

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