Question

Write a program that will create an array of ten integers, allow the user to enter those integers, and

eventually search through the array based on index position:

1.

Declare

the array. You cannot assign

elements

to an array until it has

first been created.

2.

Next, run a for loop so that the user can enter an integer to save in each

index position

of the array. Since you this array holds ten

elements

, the

index position

starts at 0 and ends at 9.

Think about this when creating the for loop

. How can you

make it so that each loop iteration is specific to

one

specific index

of the array?

3.

Once the array has been filled with values, allow the user to search for a specific element based on

index position

. Allow them to enter an

index position

, and then display the

element

at that given

position. Let the user keep searching until they enter -1.

4.

What happens when you search for an index position that doesn’t exist,

such as 10? Add some code that, if the user tries searching for an index

that is

out-of-bounds

, displays a message and asks for a new index.

Answer 1

Note: As language was not given so question is solved in C, C++ and java and it is done accordingly. Please comment for any problem. Please Uprate. Thanks.

C code:

#include<stdio.h>
void main(){
   int arrayOfInt[10]; // part 1
   int i;
   int choosenIndex=0;
   for(i=0;i<10;i++){ // part 2
       printf("Please give Integer for index %d :",i);
       scanf("%d",&arrayOfInt[i]);
   }
   while(choosenIndex!=-1){
       printf("Please give index of element to search(-1 to exit) :"); // part 3
       scanf("%d",&choosenIndex);
       if(choosenIndex>9 || choosenIndex<-1){ // part 4
       printf("Index out of bound.\n");
       continue;
       }else if(choosenIndex==-1){ // part 4
           continue;
       }else{
           printf("Value at index %d is %d\n",choosenIndex,arrayOfInt[choosenIndex]);
       }
   }
}

----------------------------------

c++ code:

#include<iostream>
using namespace std;

void main(){
   int arrayOfInt[10]; // part 1
   int i;
   int choosenIndex=0;
   for(i=0;i<10;i++){ // part 2
       cout<<"Please give Integer for index "<<i<<":";
       cin>>arrayOfInt[i];
   }
   while(choosenIndex!=-1){
       cout<<"Please give index of element to search(-1 to exit) :"; // part 3
       cin>>choosenIndex;
       if(choosenIndex>9 || choosenIndex<-1){ // part 4
       cout<<"Index out of bound.\n";
       continue;
       }else if(choosenIndex==-1){ // part 4
           continue;
       }else{
           cout<<"Value at index "<<choosenIndex<<" is "<<arrayOfInt[choosenIndex]<<endl;
       }
   }
   system("pause");
}

------------------

Java:

import java.util.Scanner;

public class main {
   public static void main(String args[]){
       int[] arrayOfInt=new int[10];// part 1
           int i;
           Scanner input=new Scanner(System.in);
           int choosenIndex=0;
           for(i=0;i<10;i++){ // part 2
               System.out.println("Please give Integer for index "+i+":");
               arrayOfInt[i]=input.nextInt();
           }
           while(choosenIndex!=-1){
               System.out.println("Please give index of element to search(-1 to exit) :"); // part 3
               choosenIndex=input.nextInt();;
               if(choosenIndex>9 || choosenIndex<-1){ // part 4
                   System.out.println("Index out of bound.\n");
               continue;
               }else if(choosenIndex==-1){ // part 4
                   continue;
               }else{
                   System.out.println("Value at index "+choosenIndex+" is "+arrayOfInt[choosenIndex]+"\n");
               }
           }
   }
}

Output:

C

C++ :

Java :