The fread function reads nmemb elements from the given stream to the given array. for each element, fgetc is called size times (count of bytes for a single element) and file position indicator for the stream is advanced by the number of characters read. It is declared in stdio.h and takes four arguments. The fread […]
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fwrite in C writes nmemb elements from the given array to the output stream. for each object fputc is called size times (count of bytes for a single element) and file position indicator for the stream is advanced by the number of characters written. It is declared in stdio.h and takes four arguments. The fwrite
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Sometimes we require persistent data in our C program, in that situation knowledge of file handling in C is very helpful. So you should have the basic knowledge of file handling in C. Basically, file represents a sequence of bytes that store in the disk permanently. Previously, I had worked on a restaurant application( Vx520
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In my previous article, I explained how to create a dynamic array in C. After reading the post, Many readers requested a guide on implementing a vector in C. A vector is essentially a dynamic array that stores a collection of elements same type in a contiguous memory. It has the ability to resize itself
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Sometimes we require to communicate with an external device like a printer, microcontroller board or any serial device using the serial port of a windows machine. There is a lot of serial application available like Hercules, HyperTerminal, Docklight, ..etc. We can use any one of them for serial communication but sometimes we require to create our
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In this article, I will explain the local static and global variables in C. Basically variable defines a location name where you can put value and you can use these values whenever required in the program. You can also read below Articles, 1. Introduction of data types 2. Variable in C 3. Storage Class introduction
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Before start discussing on “Insert a node in the doubly linked list?” First, I will put a light on a “singly linked list”, A singly linked list is a collection of nodes in which a node consists of a data part and pointer part. The data part store the value (maybe integer, character, and floating
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In the previous article, I have described how we can find the Com Port Id of a USB Serial device (Arduino) with the help of VID and PID. If you have not seen this article you can read it, how to get Com Port Id of a USB Serial device. In this article, I will
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Recursion is a process in which function call itself and the function that calls itself directly or indirectly called a recursive function. A recursive function calls itself so there can be several numbers of the recursive call, so the recursive function should have the termination condition to break the recursion. If there is a not
In my one project, I need to create an application to upgrade the firmware of the device. Here comport is using for the communication. We cannot fix the COM ID of the USB device in the application because the device could be enumerated with different com id on a different machine as per the availability.
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