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/*
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 * fileexists checks whether a file exists or not.
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 * returns 0 if file not found, non-zero otherwise.
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 */
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#include <stdio.h>
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#include "fileexst.h"
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int fileexists(const char *filename) {
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  FILE *fd;
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  fd = fopen(filename, "rb");
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  if (fd == NULL) return(0); /* file does not exists */
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  fclose(fd);
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  return(1);
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}