So to use these functions safely with plain chars (or signed chars), the argument should first be converted to unsigned char. Because it is good to convert signed char to unsigned char before being assigned or converted to a larger signed type. int my_toupper(char ch) { return toupper((...
Thefread()function is important for programs that need to access and manipulate binary data. When paired with other library functions, it is extremely helpful. The function is relatively simple to use and can be tailored to a program’s specific needs with the addition of optional arguments. Hi...
Let’s now look at some examples, to understand this function better. We’ll also be usingfork()along withexecvp(), so that we can still have our C program with us! Using execvp() in C / C++ - Some Examples If you want to see what exactly happens if you try to useexecvp()withou...
How to Use the execlp Function in C Jinku Hu Feb 02, 2024 C C Process This article will demonstrate multiple methods about how to use the execlp function in C. Use execlp to Execute a New Program Using Filename in C exec family of functions are provided as an alternative API to the ...
In C, you can achieve this by using various functions provided by the standard library. In this article, we’ll explore how to calculate elapsed time in a code block using C. Calculate Elapsed Time in a Code Block in C Using thegettimeofdayFunction ...
Using the C String.h Library Functions We will use the three most important functions of the “string.h” header file in the following examples: Example 1: Using the String Length Function The string length function of the “string.h” header file is used to calculate the length of a stri...
For windows, in a kernel-mode driver (KMDF), we use a lot of call back functions for the plug and play and device preparation. Each callback function is invoked by the operating system at specific events but we need to register to call back function using the function pointer. ...
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The functionworkcalls the selected function from inside theforloop by using the following function call: ( *function )( i ); One argument,i, is passed to the called function. See Also Concepts Functions (C)