Question 1
#include <iostream>
using namespace std;

int main(){

        int number[10]={36, 81, 45, 17, 69, 3, 23, 92, 70, 54};
        int index;

        while(1){
                do{
                        cout << "Array index=";
                        cin >> index;
                }while(index<0||index>9);
                cout << "Content=" << number[index] << endl;

        }

        return 0;
}

Question 2
#include <iostream>
using namespace std;

int main(){

        int number[10]={36, 81, 45, 17, 69, 3, 23, 92, 70, 54};
        int num, i;       

        while(1){

                cout << "Number=";
                cin >> num;
                i=0;
                while(i<10&&number[i]!=num){
                        i++;
                }

                if(i==10)
                        cout << "Not found" << endl;
                else
                        cout << "Index=" << i <<endl;    
        }

        return 0;
}

Question 3
#include <iostream>
using namespace std;

int main(){

        int number[10]={36, 81, 45, 17, 69, 3, 23, 92, 70, 54};
        int index, value, i;

        while(1){
                for(i=0;i<10;i++)
                        cout << number[i] <<", ";
                cout << endl;

                do{
                        cout << "Array index = ";
                        cin >>index;
                }while(index<0||index>9);

                cout << "Reset value = ";
                cin >> value;

                number[index]=value;
                cout << endl;
        }

        return 0;
}

Question 4
#include <iostream>
using namespace std;

int main(){

        int number[10]={36, 81, 45, 17, 69, 3, 23, 92, 70, 54};
        int index1, index2, i, temp;

        while(1){

                for(i=0;i<10;i++)
                        cout << number[i] << ", ";
                cout << endl;

                do{
                        cout << "Input two indexes: ";
                        cin >> index1 >> index2;
                }while(index1<0||index1>9||index2<0||index2>9);

                temp=number[index1];
                number[index1]=number[index2];
                number[index2]=temp;

                cout << endl;

        }

        return 0;
}

Quesiton 5
#include <iostream>
using namespace std;

int main(){

        int total, number[100],i;

        do{
                cout << "number of integer: ";
                cin >> total;
        }while(total<=0);

        for(i=0;i<total;i++){
                cout << "number " << i << " = ";
                cin >> number[i];
        }
        cout << endl;

        cout << "the numbers in reverse order are: ";
        for(i=total-1;i>=0;i--)
                cout << number[i] << " ";
        cout << endl;

        return 0;
}

Question 6
#include <iostream>
using namespace std;

int main(){

        int total, number[100],i;

        do{
                cout << "number of integer: ";
                cin >> total;
        }while(total<=0);

        for(i=0;i<total;i++){
                cout<<"number "<<i<<" = ";
                cin>>number[i];
        }
        cout << endl;

        cout<<"the odd numbers are: ";
        for(i=0;i<total;i++){
                if(number[i]%2==1)
                        cout<<number[i]<<" ";
        }
        cout<<endl;

        cout<<"the odd entries are: ";
        for(i=1;i<total;i+=2){
                cout<<number[i]<<", ";
        }
        cout << endl;

        return 0;
}

Question 7
#include <cstdlib>
#include <iostream>
#include <time.h>
using namespace std;

int main(){

        int number[6],drawn[50],i,num;

        srand(time(NULL));

        for(i=0;i<50;i++)
                drawn[i]=0;

        for(i=0;i<6;i++){
                do{
                        num=rand()%49+1;
                }while(drawn[num]==1);
                number[i]=num;
                drawn[num]=1;
        }

        cout<<"The numbers are: ";
        for(i=0;i<6;i++){
                cout<<number[i]<<", ";
        }
        cout<<endl;

        return 0;
}

Question 10
#include <iostream>
using namespace std;

int main(){

        int number[100]={36, 81, 45, 17};
        int index, total=4,i,n;

        while(1){
                for(i=0;i<total;i++)
                        cout<<number[i]<<", ";
                cout<<endl;

                do{
                        cout<<"Array index = ";
                        cin>>index;
                }while(index<0||index>total);

                cout<<"New element = ";
                cin>>n;

                for(i=total-1;i>=index;i--)
                        number[i+1]=number[i];
                number[index]=n;

                total++;

        }

        return 0;
}

Question 11
#include <iostream>
using namespace std;

int main(){

        int number[10]={36, 81, 45, 17, 69, 3, 23, 92, 70, 54};
        int index, total=10,i;

        while(total>0){
                for(i=0;i<total;i++)
                        cout<< number[i] << ", ";
                cout<<endl;

                do{
                        printf("Array index = ");
                        scanf("%d",&index);
                }while(index<0||index>=total);

                for(i=index;i<total-1;i++)
                        number[i]=number[i+1];

                total--;

        }

        return 0;
}