Question: What Is The Value Of EOF In C?

What does the following C code snippet mean?

What does the following C code snippet mean.

char *gets(char *s) a) reads the next input line into the array s.

b) writes the line into the array s.

c) reads the next input character into the array s..

What is EOF and its value?

EOF is a macro which expands to an integer constant expression with type int and an implementation dependent negative value but is very commonly -1. ‘\0’ is a char with value 0 in C++ and an int with the value 0 in C.

What is the use of EOF?

In computing, end-of-file (EOF) is a condition in a computer operating system where no more data can be read from a data source.

What is operators in C?

An operator is a symbol that tells the compiler to perform specific mathematical or logical functions. C language is rich in built-in operators and provides the following types of operators − Arithmetic Operators. Relational Operators.

What is a pass by value?

Pass by value means that a copy of the actual parameter’s value is made in memory, i.e. the caller and callee have two independent variables with the same value. … A copy of the data is sent to the callee. Changes made to the passed variable do not affect the actual value.

What is C file data type?

A FILE is a type of structure typedef as FILE. It is considered as opaque data type as its implementation is hidden. We don’t know what constitutes the type, we only use pointer to the type and library knows the internal of the type and can use the data. Definition of FILE is in stdio although it is system specific.

What is the EOF character in C?

EOF means end of file. It’s a sign that the end of a file is reached, and that there will be no data anymore. On Linux systems and OS X, the character to input to cause an EOF is CTRL+D. For Windows, it’s CTRL+Z.

How do I print the value of EOF?

Since EOF is an integer, we can print it with %d format in the printf. 2. EOF value is printed as -1.

What does EOF mean?

end-of-fileend-of-file: a code, marker, or signal used to indicate the end of a file of data.

What is the use of Getchar in C?

C library function – getchar() The C library function int getchar(void) gets a character (an unsigned char) from stdin. This is equivalent to getc with stdin as its argument.

How do you initialize an array in C?

Initializing ArraysArrays may be initialized when they are declared, just as any other variables.Place the initialization data in curly {} braces following the equals sign. … An array may be partially initialized, by providing fewer data items than the size of the array.More items…

What is value of in C?

In C programming, a character variable holds ASCII value (an integer number between 0 and 127) rather than that character itself. This integer value is the ASCII code of the character. For example, the ASCII value of ‘A’ is 65.

What is the role of EOF?

C++ provides a special function, eof( ), that returns nonzero (meaning TRUE) when there are no more data to be read from an input file stream, and zero (meaning FALSE) otherwise. Rules for using end-of-file (eof( )): … Always test for the end-of-file condition before processing data read from an input file stream.

What is EOF in Python?

EOF stands for End Of File. This error usually means that there was an open parenthesis somewhere on a line, but not a matching closing parenthesis. Python reached the end of the file while looking for the closing parenthesis. … Python will attempt to highlight the offending line in your source code.

What does Scope mean in C?

A scope in any programming is a region of the program where a defined variable can have its existence and beyond that variable it cannot be accessed. There are three places where variables can be declared in C programming language − Inside a function or a block which is called local variables.