How to read from and write to a binary and text (ASCII) file in Matlab?

1. Here is the example for binary:

% Clear screen, clear workspace, and close all figures
clc;
clear all;
close all;

% Path and file name
% Read file
fReadName = 'ReadDataFile.bin'; % file from the current working directory

% Write file
fWriteName = 'WriteDataFile.bin';  % file to be written into the current working directory

% Open the file in read mode
 fidRead = fopen(fReadName,'rb');

 % Open the file in write mode
fidWrite = fopen(fWriteName,'wb');

% Read the data of correct data-type
dataType = 'int16';
% For more details on the Matlab supported data types: click here

numberOfSeconds = 300;
fSamp = 12.5e6;

tic
for ii = 1:1:numberOfSeconds

    numberOfwordsToReadPerTime = fSamp * 1 * 2;

   % Read from File
   dataFromFile = fread(fidRead,numberOfwordsToReadPerTime,dataType);

   % Write into the file
   fwrite(fidWrite,dataFromFile,dataType);

end

toc; % tic and toc gives the time taken by Matlab to complete the execution of the above for-loop.

% Close the files
fclose(fidRead);
fclose(fidWrite);

% 2a. Example for ASCII/text file containing numbers

a = magic(10); % generates 10x10 matrix of numbers
save bFile.txt a -ascii;

fid = fopen('bFile.txt','r');
d = fscanf(fid,'%f',20)  % just reads first 20 words into a column
fclose(fid);

%Skipping few number of words from the file requires exact number of bytes + %bytes for end-of-line.
% we can check the number of bytes read so far using the command 'ftell'


% 2b. Example for ASCII/text file containing numbers
%To read the 10x10 matrix
rowStart = 0;
rowColumn = 0;
rowEnd = 9;
colEnd = 9;

d2 = dlmread('bFile.txt','',[rowStart rowColumn rowEnd colEnd])



%Result


d =

    92
    99
     1
     8
    15
    67
    74
    51
    58
    40
    98
    80
     7
    14
    16
    73
    55
    57
    64
    41


d2 =

    92    99     1     8    15    67    74    51    58    40
    98    80     7    14    16    73    55    57    64    41
     4    81    88    20    22    54    56    63    70    47
    85    87    19    21     3    60    62    69    71    28
    86    93    25     2     9    61    68    75    52    34
    17    24    76    83    90    42    49    26    33    65
    23     5    82    89    91    48    30    32    39    66
    79     6    13    95    97    29    31    38    45    72
    10    12    94    96    78    35    37    44    46    53
    11    18   100    77    84    36    43    50    27    59