- C program to find factorial of a number.
- Program to swap two bits.
- Program to swap two words/nibbles of a byte.
- C program to swap two numbers without using third variable.
- Program to check whether number is Palindrome or not.
What is required in each C program?
The correct answer to the question “What is required in each C program” is, option (a).
The program must have at least one function
. Any C program will have a function, and function is nothing but a piece of code.
What is scanf () in C?
In the C programming language, scanf is
a function that reads formatted data from stdin
(i.e, the standard input stream, which is usually the keyboard, unless redirected) and then writes the results into the arguments given.
Why is C called C?
C is a general purpose computer programming language developed in 1972 by Dennis Ritchie at the Bell Telephone Laboratories for use with the Unix operating system. It was named ‘C'
because many of its features were derived from an earlier language called ‘B'
.
What are the important topics in C language?
- Basics:
- Variable Declaration, Definition and Scope:
- Data Types:
- Storage Classes:
- Input/Output:
- Operators:
- Preprocessor:
- Arrays & Strings:
What is #include in C?
In the C Programming Language, the #
include directive tells the preprocessor to insert the contents of another file into the source code at the point where
the #include directive is found.
What is printf () in C?
1. printf() function in C language: In C programming language, printf() function is
used to print the (“character, string, float, integer, octal and hexadecimal values”)
onto the output screen. We use printf() function with %d format specifier to display the value of an integer variable.
Can a program run without main () in C?
So actually
C program can never run without a main
() . We are just disguising the main() with the preprocessor, but actually there exists a hidden main function in the program.
What is Getch?
getch()
method pauses the Output Console until a key is pressed
. It does not use any buffer to store the input character. The entered character is immediately returned without waiting for the enter key. … The getch() method can be used to accept hidden inputs like password, ATM pin numbers, etc.
What is printf () and scanf in C?
printf() and scanf() in C
The printf() and scanf() functions are
used for input and output in C language
. Both functions are inbuilt library functions, defined in stdio.h (header file).
What does %d mean in C?
| Specifier Used For | %Lf long double | %n prints nothing | %d a decimal integer (assumes base 10) | %i a decimal integer (detects the base automatically) |
|---|
Is C more powerful than C++?
C is still in use because it is
slightly faster and smaller than C++
. For most people, C++ is the better choice. It has more features, more applications, and for most people, learning C++ is easier. C is still relevant, and learning to program in C can improve how you program in C++.
Is C still used?
Despite the prevalence of higher-level languages, the C programming language continues to empower the world. There are plenty of reasons to believe that C programming will remain active for a long time.
Why C is a mother language?
Answer: C is known as a mother language
because most of the compilers and JVMs are written in C language
. … It introduces new core concepts like arrays, functions, file handling which are used in these languages.
What is a #include preprocessor?
The #
include directive tells the C preprocessor to include the contents of the file specified in the input stream to the compiler and then continue with the rest of the original file
. For example, the header file, file.h contains the following: char *func (void);
What is #include called?
Answer: A Preprocessor Directive, also called
the include statement
, the #include
