Which key word is used to perform unconditional branching?

C Programming Language > Overview of C Language > Keywords in C

Short Question

2335

Answer:

goto

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413. What is a pointer to a function? Give the general syntax for the same.

Answer:

A pointer holding the reference of the function is called pointer to a function. In general it is declared as follows.

T (*fun_ptr) (T1,T2…); Where T is any date type.

Once fun_ptr refers a function the same can be invoked using the pointer as follows.

fun_ptr();
[Or]
(*fun_ptr)();

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414. Explain the use of comma operator (,).

Answer:

Comma operator can be used to separate two or more expressions.

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415. What is a NULL statement?

Answer:

A null statement is no executable statements such as ; (semicolon).

Eg: int count = 0; 
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416. What is a static function?

Answer:

A function

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417. Which compiler switch to be used for compiling the programs using math library with gcc compiler?

Answer:

Opiton

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420. What is a sequential access file?

Answer: When writing programs that will store and retrieve data in a file, it is possible to designate that file into different forms. A sequential access file is such that data are saved in sequential order: one data is placed into the file after another. To access a particular data within the sequential access file, data has to be read one data at a time, until the right one is reached.

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421. What is variable initialization and why is it important?

Answer: This refers to the process wherein a variable is assigned an initial value before it is used in the program. Without initialization, a variable would have an unknown value, which can lead to unpredictable outputs when used in computations or other operations.

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Answer: Source codes are codes that were written by the programmer. It is made up of the commands and other English-like keywords that are supposed to instruct the computer what to do. However, computers would not be able to understand source codes. Therefore, source codes are compiled using a compiler. The resulting outputs are object codes, which are in a format that can be understood by the computer processor. In C programming, source codes are saved with the file extension .C, while object codes are saved with the file extension .OBJ

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