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CodeBlocksPortable/WATCOM/samples/clibexam/strerror.c

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#include <stdio.h>
#include <string.h>
#include <errno.h>
void main()
{
FILE *fp;
fp = fopen( "file.nam", "r" );
if( fp == NULL ) {
printf( "Unable to open file: %s\n",
strerror( errno ) );
}
}