20 lines
442 B
C
20 lines
442 B
C
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#define __STDC_WANT_LIB_EXT1__ 1
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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void main()
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{
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FILE *fp;
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char emsg[ 100 ];
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size_t emsglen;
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fp = fopen( "file.nam", "r" );
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if( fp == NULL ) {
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emsglen = strerrorlen_s( errno );
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printf( "Length of errormessage: %d\n", emsglen );
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strerror_s( emsg, sizeof( emsg ), errno );
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printf( "Unable to open file: %s\n", emsg );
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}
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}
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