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Comment: Edited by NavBot (jp)

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The standard {{strncpy()}} function does not guarantee that the resulting string is null terminated \[[ISO/IEC 9899:1999|AA. References#ISOBibliography#ISO/IEC 9899-1999]\]. If there is no null character in the first {{n}} characters of the {{source}} array, the result may not be null terminated.

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The {{strncpy_s()}} function copies up to {{n}} characters from the source array to a destination array \[[TR 24731|AA. References#ISOBibliography#ISO/IEC TR 24731-1-2007]\]. If no null character was copied from the source array, then the {{n{}}}th position in the destination array is set to a null character, guaranteeing that the resulting string is null-terminated.

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\[[ISO/IEC 9899:1999|AA. References#ISOBibliography#ISO/IEC 9899-1999]\] Section 7.21, "String handling <string.h>"
\[[ISO/IEC PDTR 24772|AA. References#ISOBibliography#ISO/IEC PDTR 24772]\] "CJM String Termination"
\[[ISO/IEC TR 24731-1:2007|AA. References#ISOBibliography#ISO/IEC TR 24731-1-2007]\] Section 6.7.1.4, "The strncpy_s function"

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