Hello everyone, In this post, we will show you how to write a simple **factorial** **program** in the **Go** programming language. The example program has been tested and shared in the same post.

### Go – Factorial Program

In below program, you can see it has two functions defined, the **factorial()** function is taking an integer as an argument and which is responsible for calculating factorial for a given number and **main()** function is an entry point of an application.

package main import "fmt" // main function func main() { for a := 1; a <= 10; a++ { fmt.Println(a," factorial is", factorial(a)) } } // function to find factorial func factorial(number int) int { var result int = 1 for i := 1; i <= number; i++ { result = result * i } return result }

### Go - Recursive Factorial Program

package main import "fmt" // main function func main() { for a := 1; a <= 10; a++ { fmt.Println(a," factorial is", factorial(a)) } } // function to find factorial func factorial(number int) int { if number >= 1 { return number * factorial(number - 1) } return 1 }

### Output

1 factorial is 1 2 factorial is 2 3 factorial is 6 4 factorial is 24 5 factorial is 120 6 factorial is 720 7 factorial is 5040 8 factorial is 40320 9 factorial is 362880 10 factorial is 3628800

### References

- https://golang.org/doc/
- https://golang.org/pkg/
- https://golang.org/pkg/fmt/
- https://golang.org/pkg/fmt/#Println

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