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How to find  factorial of a number in c programming

How to find  factorial of a number in c programming

In this tutorial I will teach you about factorial of a number and how to calculate factorial in c programming using loop. But first of all you must know about factorial of a number. What is factorial of a number? In mathematics, the factorial of a non-negative integer n, denoted by n!, is the product of all positive integers less than or equal to n. For example, 5 ! = 5 × 4 × 3 × 2 × 1 = 120. What is loop in programming? Repeats a statement or group of statements while a given condition is true. It tests the condition before executing the loop body. ... Executes a sequence of statements multiple times and abbreviates the code that manages the loop variable. Syntax of for loop : for(initialization;condition;increment/decrement){    statement to execute until condition is true } But How: We get a number from the user and then start a loop from 1 to that number we have taken from user and multiply all numbers one by one and store the result in a variable named fact and after all we print that variable as the factorial of that number which we have taken from the user. Video Tutorial :

How to find factorial in c programming

Watch our other videos on c programming: 1.How to make a calculator in c programming using switch statement 2.Number is prime or not with c programming 3.How to find factorial using recursion 4.How to delete in array Must subscribe our youtube channel for more: Computer My Passion

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Function in c programming

Function in c programming - How to define and  call a function in c programming - Types of user defined functions - Common programming errors in functions in c programming

In this tutorial I will teach you all about user define functions and make simple function of each type to teach you in a good manner.

What is function in c ? A function is a block of code that performs a specific task. Every C program has at least one function, which is main(). Advantages of functions : we can divide our program in smaller modules. Program readability increase. Functions once created can be reused in other programs. Our main function become smaller.

Types of function : 1.Predefined functions. 2.User defined functions.

Predefined functions ? Functions described by the creators of c programming and are in standard libraries.

User defined functions ? Function which we describe in our programs are known as user defined functions.

How to define a function ?

Return_type    Function_Name(Parameters) {

  Function Body

}

How to call a function ? Only Write function name and then arguments to pass in small brackets if any.

There are four types of user defined functions in c programming. 1.Functions with no arguments and no return value. 2.Functions with no arguments and a return value. 3.Functions with arguments and no return value. 4.Functions with arguments and a return value.

Common programming Errors in functions: Some common programming errors in c functions : 1,Specifying function parameters of the same type as int x, y instead of int x, int y results in a compilation error. 2.Placing a semicolon after the right parenthesis enclosing the parameter list of a function definition is a syntax error. 3.Defining a parameter again as a local variable in a function is a compilation error. 4.Although it’s not incorrect to do so, do not use the same names for a function’s arguments and the corresponding parameters in the function definition. This helps avoid confusion. 5.Defining a function inside another function is a syntax error. 6.Check that your functions that are supposed to return values do so. Check that your functions that are not supposed to return values do not. 7.Define prototype if your function is below to main function.

Everything is also described in the videos: 1.How define a function and call a function : https://www.youtube.com/watch?v=fVI44BTu-Zo 2.Types of User defined functions with examples: https://www.youtube.com/watch?v=ACHapu_n5VA 3.Coomon programnming Errors in functions : https://www.youtube.com/watch?v=p-jhZgcI1Tw

Watch our other videos on c programming: 1.How to make a calculator in c programming using switch statement: https://www.youtube.com/watch?v=vxbelc93pmg 2.How to delete in array: https://www.youtube.com/watch?v=gyOXRW1Klic 3.How to find factorial using recursion: https://www.youtube.com/watch?v=d6G7GZ1QWAU 4.Number is prime or not with c programming: https://www.youtube.com/watch?v=FpIlXUsdoCM Must subscribe our youtube channel for more: https://www.youtube.com/channel/UCcdwj6ywQ0XFj8Y9geOalUw