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The C99 \[[ISO/IEC 9899-1999|AA. C References#ISO/IEC 9899-1999]\] C standardtandard function {{fopen()}} is typically used to open an existing file or create a new one \[[ISO/IEC 9899-1999|AA. C References#ISO/IEC 9899-1999]\]. However, {{fopen()}} does not indicate if an existing file has been opened for writing or a new file has been created. This may lead to a program overwriting or accessing an unintended file. |
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