C Programming Interview Questions Pdf Download
34) What are comments and how do you insert it in a C program? Comments are a great way to put some remarks or description in a program. w means write, and will open a file for output. They contain two essential things: the definitions and prototypes of functions being used in a program. C language is a case sensitive language. 21) What are variables and it what way is it different from constants? Variables and constants may at first look similar in a sense that both are identifiers made up of one character or more characters (letters, numbers and a few allowable symbols). 64) What is a newline escape sequence? A newline escape sequence is represented by the n character.
All reserved words must be written in lowercase; otherwise the C compiler would interpret this as unidentified and invalid. 13) What is the modulus operator? The modulus operator outputs the remainder of a division. 20) What is syntax error? Syntax errors are associated with mistakes in the use of a programming language. 52) What are linked list? A linked list is composed of nodes that are connected with another. By creating an array of characters, you can store string values in it. 79) Dothese two program statements perform the same output? 1) scanf(%c, &letter); 2) letter=getchar() Yes, they both do the exact same thing, which is to accept the next key pressed by the user and assign it to variable named letter. This is used to insert a new line when displaying data in the output screen. Previous data that was stored on that file will be erased. 43) What are preprocessor directives? Preprocessor directives are placed at the beginning of every C program. After the file was opened by the fopen() function, the fseek would require three parameters to work: a file pointer to the file, the number of bytes to search, and the point of origin in the file.
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