Printf in c

1. What is printf () in C?
2. What is printf and scanf in C?
3. What is %d printf?
4. Is printf C or C ++?
5. Why is it called printf?
6. What is scanf () in C?
7. What is void main in C?
8. What is printf used for?
9. How does Fgets work?
10. What is garbage value C?
11. What is an int in C?
12. What does %- 5d mean in C?
13. Is Cin slower than Scanf?
14. What can I use instead of printf?

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.

What is 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 is %d printf?

%d tells printf that the corresponding argument is to be treated as an integer value; the type of the corresponding argument must be int .

Is printf C or C ++?

Printf is used in c,cout is used in c++ and they used for displaying a output.

Why is it called printf?

"printf" is the name of one of the main C output functions, and stands for "print formatted". printf format strings are complementary to scanf format strings, which provide formatted input (parsing). ... The format string itself is very often a string literal, which allows static analysis of the function call.

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.

What is void main in C?

Void main () is the entry point for execution in C program. The void is a keyword that represents function will not return anything but a void value. Main is the name of the function and () represents parameter list that can be passed to function in this case nothing is passed.

What is printf used for?

printf() function:

Printf() function is used to print the “character”, string, float, integer, octal, and hexadecimal values onto the output screen. We use printf() function with a %d format specifier to display the value of an integer variable.

How does Fgets work?

The fgets() function reads characters from the current stream position up to and including the first new-line character (\n), up to the end of the stream, or until the number of characters read is equal to n-1, whichever comes first.

What is garbage value C?

If this variable a is only declared but no longer used in the program is called garbage value. For example: int a, b; b=10; printf("%d",b); return 0; Here it's only declared but no longer assigned or initialized. So this is called garbage value.

What is an int in C?

An int variable contains only whole numbers

Int, short for "integer," is a fundamental variable type built into the compiler and used to define numeric variables holding whole numbers. ... C, C++, C# and many other programming languages recognize int as a data type.

What does %- 5d mean in C?

That is what %5d means: print a base-10 number in a field of width 5, with the num- ber right-aligned and front-filled with spaces. To make the number left-aligned, a minus sign is. added to the format specifier. To print a number 5. spaces wide and left-justified (left-aligned) the for-

Is Cin slower than Scanf?

With synchronization turned off, the above results indicate that cin is 8-10% faster than scanf(). This is probably because scanf() interprets the format arguments at runtime and makes use of variable number of arguments, whereas cin does this at compile time.

What can I use instead of printf?

puts() can be preferred for printing a string because it is generally less expensive (implementation of puts() is generally simpler than printf()), and if the string has formatting characters like '%s', then printf() would give unexpected results.