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shouhei

binary

Oct 6th, 2013
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  1. #include <stdio.h>
  2. int main(void)
  3. {
  4. FILE *fpr;
  5. FILE *fpw;
  6. char *fname_r = "test.txt";
  7. char *fname_w = "copy.txt";
  8. unsigned char buf[10000];
  9. int i, size;
  10.  
  11. fpr = fopen( fname_r, "rb" );
  12. if( fpr == NULL ){
  13. printf( "読込用 %sファイルが開けません¥n", fname_r );
  14. return -1;
  15. }
  16.  
  17. fpw = fopen( fname_w, "wb" );
  18. if( fpw == NULL ){
  19. printf( "書込用 %sファイルが開けません¥n", fname_w );
  20. return -1;
  21. }
  22.  
  23. size = fread( buf, sizeof( unsigned char ), 10000, fpr );
  24. fwrite( buf, sizeof( unsigned char ), size, fpw );
  25.  
  26. fclose( fpr );
  27. fclose( fpw );
  28.  
  29. printf( "%sファイルのコピーが終わりました¥n", fname_w );
  30. return 0;
  31. }
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