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Example of a 2-sided call sheet layout from the open source call sheet tool G-Casper. [2]Call sheets include other useful information such as contact information (e.g. phone numbers of crew members and other contacts), the schedule for the day, which scenes and script pages are being shot, and the address of the shoot location and parking arrangements. [3]
The formatting placeholders in scanf are more or less the same as that in printf, its reverse function.As in printf, the POSIX extension n$ is defined. [2]There are rarely constants (i.e., characters that are not formatting placeholders) in a format string, mainly because a program is usually not designed to read known data, although scanf does accept these if explicitly specified.
For example, an integer can be printed using the "%d" formatting code, e.g.: printf("%d", 42); This formats the integer "42" as text and prints it to the standard output. printf is typically the first function any C programmer encounters, because it is the only function which appears in the standard Hello world program:
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New York state will fine fossil fuel companies a total of $75 billion over the next 25 years to pay for damage caused to the climate under a bill Governor Kathy Hochul signed into law on Thursday.
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A malicious user may use the %s and %x format tokens, among others, to print data from the call stack or possibly other locations in memory. One may also write arbitrary data to arbitrary locations using the %n format token, which commands printf() and similar functions to write the number of bytes formatted to an address stored on the stack.
For some C compilers, an extra format specifier results in consuming a value even though there isn't one. This can allow the format string attack. Generally, for C, arguments are passed on the stack. If too few arguments are passed, then printf can read past the end of the stackframe, thus allowing an attacker to read the stack.