Factorial program in c

The output for the positive number is as follows. In the For loop, the first initialization step is executed and only once in the whole program. In this step, you can initialize and declare variables for the code. After that condition is evaluated. If the condition is true, then it will execute the code inside the block of For loop. If the condition is false, it will jump to the code after the For loop without executing the For loop code. After the For loop, the increment statement will be executed.

After that, again, the condition will be checked. Loop will get executed if the condition is true, and the loop will repeat itself, i. The loop ends when the condition is false.

In this program, we have initialized the variables I, fact and number. When the condition of for loop. The scan function is used to allow a user to enter the number by their wish. After that, For loop will work as explained above. Recursion is a method where, for instance, the feature itself is called in the software factory function below. The recursion method is mostly used to solve the problem easily. Here we have declared factorial as a function and pass num as a parameter. In the factorial method, we have used the if-else statement to check whether the entered number is positive or not as we have used in the first example.

Then we have called the factorial method where statements for factorial are executed. Explanation of the above program: Here to calculate factorial for number we have used the function method. First, we create a factorial function and pass n as a parameter to store the number value. In main method, we have declared input to allow the user to enter a value and output to print the factorial. After that, we call a function factorial where the logic for the factorial is defined.

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