Perhaps you would like to have a function that will accept any number of values and then return the average. You don't know how many arguments will be passed in to the function. One way you could make the function would be to accept a pointer to an array. Another way would be to write a function that can take any number of arguments. So you.
Try to write more detailed questions. To get an answer, explain what exactly you see the problem, how to reproduce it, what you want to get as a result, etc. Give an example that clearly demonstrates the problem. If the question can be reformulated according to the rules set out in the certificate, edit it.
Output: hello world In this code, buf1 array’s string “hello world” is first write in to stdin fd(0) then after that this string write into stdin to buf2 array. After that write into buf2 array to the stdout and print output “hello world“. This article is contributed by Kadam Patel.If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.
In C Language, computer monitor, printer etc output devices are treated as files and the same process is followed to write output to these devices as would have been followed to write the output to a file. NOTE: printf () function returns the number of characters printed by it, and scanf () returns the number of characters read by it.
Using Multiple printfs. The printf function can print Welcome to C! several different ways. For example, the program of Fig. 2.3 produces the same output as the program of Fig. 2.1.This works because each printf resumes printing where the previous printf stopped printing. The first printf (line 8) prints Welcome followed by a space, and the second printf (line 9) begins printing on the same.
C Language: strtol function (Convert String to Long Integer) In the C Programming Language, the strtol function converts a string to a long integer. The strtol function skips all white-space characters at the beginning of the string, converts the subsequent characters as part of the number, and then stops when it encounters the first character that isn't a number.
Frightening, no? That’s because fgets() is a file function, which reads text from a file, as in “file get string.” That’s how programmers talk after an all-nighter. Because the operating system considers standard input like a file, you can use fgets() to read text from the keyboard.
A large C program can easily be tracked when it is divided into functions. The core concept of C functions are, re-usability, dividing a big task into small pieces to achieve the functionality and to improve understandability of very large C programs.