A file pointer should inclement(++) if we find the character, we think, the below is a error.
souce code:
souce is the below.
.\main.cpp Wed Nov 04 19:14:56 2020
380 ://
381 ://
382 ://
383 ://
384 ://
385 :int found_enter_001 (char* filename) {
386 : FILE *fp;
387 : char b_dummy[256];
388 : int i, j ;
389 : int file_end;
390 : STRUCT_FILE structure_fp;
391 : char c;
392 :
393 : printf("found_enter_001: starts\r\n");
394 :
395 : fp = fopen(filename, "rb");
396 : structure_fp.file_start = fp;
397 : structure_fp.fp = fp;
398 :
399 : file_end = filesize(fp);
400 : structure_fp.file_end_index = file_end;
401 :
402 : for ( i =0; i<file_end && i<10; i++ ) {
403 :
404 : printf("i: %d loop starts. ", i );
405 : printf("struct_fp.fp |%d|\r\n", structure_fp.fp );
406 :
407 : structure_fp.index = i;
408 : dummy[0] = get_char( structure_fp );
409 : dummy[1] = '\0';
410 :
411 :
412 : printf("i: %d: |%s| \r\n", i, dummy);
413 :
414 : // We could find flip side:
415 : //
416 : //
417 :/* if ( b_dummy[0] == 13 && b_dummy[1] == 10 ) {
418 : b_dummy[2] = '\0';
419 : printf("We found Eenter opposite side: |%s|\r\n", b_dummy);
420 : exit(-1);
421 : }
422 :*/
423 : }
424 :
425 : printf("found_enter_001: ends\r\n");
426 : return 0;
427 :}
428 :
429 :// https://bituse.info/c_func/48
430 ://
431 ://
432 :char get_char ( STRUCT_FILE structure_fp) {
433 : long diff;
434 : char c;
435 : char dummy[255];
436 :
437 : printf("get_char starts.\r\n");
438 :
439 : diff = (long)structure_fp.fp - (long)structure_fp.file_start;
440 :
441 : // set
442 : //(long)structure_fp.file_start + (long)structure_fp.index;
443 : // fseek(fp,0,SEEK_END);
444 : // fseek(fp,0,SEEK_CUR);
445 :
446 : printf("struct_fp.fp |%d| struct_fp.index |%d|\r\n", structure_fp.fp , structure_fp.index);
447 :
448 : fseek( structure_fp.fp, structure_fp.index, SEEK_SET);
449 : fread ( dummy, 1, 1, structure_fp.fp );
450 :
451 : printf("struct_fp.fp |%d|\r\n", structure_fp.fp );
452 :
453 : printf("get_char ends.\r\n");
454 :
455 : return dummy[0];
456 :}
457 :
--- found_enter_001: starts i: 0 loop starts. struct_fp.fp |1976736872| get_char starts. struct_fp.fp |1976736872| struct_fp.index |0| struct_fp.fp |1976736872| get_char ends. i: 0: |G| i: 1 loop starts. struct_fp.fp |1976736872| get_char starts. struct_fp.fp |1976736872| struct_fp.index |1| struct_fp.fp |1976736872| get_char ends. i: 1: |u| i: 2 loop starts. struct_fp.fp |1976736872| get_char starts. struct_fp.fp |1976736872| struct_fp.index |2| struct_fp.fp |1976736872| get_char ends. i: 2: |n| i: 3 loop starts. struct_fp.fp |1976736872| get_char starts. struct_fp.fp |1976736872| struct_fp.index |3| struct_fp.fp |1976736872| get_char ends. i: 3: |d| i: 4 loop starts. struct_fp.fp |1976736872| get_char starts. struct_fp.fp |1976736872| struct_fp.index |4| struct_fp.fp |1976736872| get_char ends. i: 4: |a| i: 5 loop starts. struct_fp.fp |1976736872| get_char starts. struct_fp.fp |1976736872| struct_fp.index |5| struct_fp.fp |1976736872| get_char ends. i: 5: |m| i: 6 loop starts. struct_fp.fp |1976736872| get_char starts. struct_fp.fp |1976736872| struct_fp.index |6| struct_fp.fp |1976736872| get_char ends. i: 6: |0| i: 7 loop starts. struct_fp.fp |1976736872| get_char starts. struct_fp.fp |1976736872| struct_fp.index |7| struct_fp.fp |1976736872| get_char ends. i: 7: |0| i: 8 loop starts. struct_fp.fp |1976736872| get_char starts. struct_fp.fp |1976736872| struct_fp.index |8| struct_fp.fp |1976736872| get_char ends. i: 8: | | i: 9 loop starts. struct_fp.fp |1976736872| get_char starts. struct_fp.fp |1976736872| struct_fp.index |9| struct_fp.fp |1976736872| get_char ends. i: 9: |:| found_enter_001: ends
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