हाउ मेनी मेनी फंक्शंस कैन वी यूज इन सी प्रोग्राम
Answers
Explanation:
A function is a group of statements that together perform a specific task. Every C program has at least one function, which is main().
C Functions
A function is a block of code that performs a specific task.
Suppose, you need to create a program to create a circle and color it. You can create two functions to solve this problem:
create a circle function
create a color function
Dividing a complex problem into smaller chunks makes our program easy to understand and reuse.
Types of function
There are two types of function in C programming:
Standard library functions
Standard library functionsUser-defined functions
Standard library functions
The standard library functions are built-in functions in C programming.
These functions are defined in header files. For example,
The printf() is a standard library function to send formatted output to the screen (display output on the screen). This function is defined in the stdio.h header file.
Hence, to use the printf()function, we need to include the stdio.h header file using #include <stdio.h>.
The sqrt() function calculates the square root of a number. The function is defined in the math.h header file.
User-defined function
You can also create functions as per your need. Such functions created by the user are known as user-defined functions.
How user-defined function works?
#include <stdio.h>
void functionName()
{
... .. ...
... .. ...
}
int main()
{
... .. ...
... .. ...
functionName();
... .. ...
... .. ...
}
The execution of a C program begins from the main() function.
When the compiler encounters functionName();, control of the program jumps to
void functionName()
And, the compiler starts executing the codes inside functionName().
The control of the program jumps back to the main() function once code inside the function definition is executed.
How function works in C programming?
Note, function names are identifiers and should be unique.