function.java

import java.util.*;

public class function {
    public static void myName(String name){
        System.out.println(name);
    }
    public static int calculateSum(int a, int b){
        int sum=a+b;
        return sum;
    }
    public static void factorial(int c){
        int fac=1;
        for (int i=c;i>=1;i--){
            fac=fac *i;
        }
        System.out.println(fac);
    }
    public static void main(String args[]){
        Scanner sc=new Scanner(System.in);
        String name=sc.next();
        myName(name);
        int a =sc.nextInt();
        int b=sc.nextInt();
        int sum=calculateSum(a,b);
        System.out.println(sum);
        int c=sc.nextInt();
        factorial(c);

        //arrayysss
        int marks[]=new int [3];
        marks[0]=87;
        marks[1]=98;
        marks[2]=89;
        for (int i=0;i < 3;i++){
            System.out.println(marks[i]);
        }
        int number[]={23,45,67};
        System.out.println(number[1]);
        for (int i=0;i<3;i++){
            System.out.println(number[i]);
        }
        int size=sc.nextInt();
        int array[]=new int [size];//if we dont give any value 0 will be stored at every position of array
        for (int i=0;i<size;i++){
            array[i]=sc.nextInt();
        }
        for (int i=0;i<size;i++){
            System.out.println(array[i]);
        }
        int x=sc.nextInt();
        for (int i=0;i<size;i++){
            if(array[i]==x){
                System.out.println("index of x is :"+i);
            }
        }

    }
    
}