C প্রোগ্রামিং ও অ্যাডভান্স File অপারেশন

In last hour's lesson you learned the basics of reading and writing disk data files. In this lesson you'll learn more about communication with disk data files. The main topics discussed in this hour are

    Random access to files
    Reading or writing binary data
    Redirecting the standard streams

In addition, the following C I/O functions are introduced in this lesson:

    The fseek(), ftell(), and rewind() functions
    The fscanf() and fprintf() functions
    The freopen() function

Summary

The file position indicator can be reset by the fseek() function.
The ftell() function can tell you the value of the current file position indicator.
The rewind() function can set the file position indicator to the beginning of a file.
After you specify the mode of the fopen() function for the binary file, you can use the fread() or fwrite() functions to perform I/O operations on binary data.
Besides the fact that the fscanf() and fprintf() functions can do the same jobs as the scanf() and printf() functions, the fscanf() and fprintf() functions also allow the programmer to specify I/O streams.
You can redirect the standard streams, such as stdin and stdout, to a disk file with the help of the freopen() function.

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C প্রোগ্রামের Constants ও Variables

Constants and Variables

Constant এর value কখনোই চেঞ্জ হয় না। অন্যদিকে variable কে ব্যবহার করা হয় ভিন্ন ভিন্ন ভ্যালু কে দেখানোর জন্য ।

ভালো C প্রোগ্রামিং কিভাবে করবে ?

ক্লাস 24 : তুমি এখন যে গুলি করতে পারো

CLASS 24: What You Can Do Now

You're now in the last chapter of this book. In this lesson you'll learn more about the C language from the following topics:

C Preprocessor এর ব্যবহার ও উপযোগিতা

In Chapter 2, "Writing Your First C Program," you learned how to use the #include preprocessor directive to include C header files. Since then, the #include directive has been used in every program in this book.

C প্রোগ্রামিং ও File অপারেশন

In Chapter 5, "Reading from and Writing to Standard I/O," you learned how to read or write characters through standard input or output. In this lesson you'll learn to read data from or write data to disk files. The following topics are discussed in this lesson:

Unions: বিসদৃশ Data সংগ্রহের অন্য উপায়

In the previous hour's lesson you learned how to store data of different types into structures. In this hour you'll learn another way to collect differently typed data items by using unions. You'll learn about the following topics in this lesson: