Question

Write a C++ program to perform the following tasks

    a) Declare an integer array of size 1000.
    b) Initialize the array with random values between 1 and 9.
    c) Write the code to find and print, how many 1’s occur in the array.

Answer 1

Code For Above Problem:

#include <iostream>
#include <stdlib.h>
#include <ctime>
using namespace std;
int main()
{
    srand((unsigned) time(0));
        int array[1000];//Declare an integer array of size 1000.
        int temp;

        //Initialize the array with random values between 1 and 9.
        for(int i=0;i<1000;i++)
    {
        temp=1 + (rand() % 9);
        array[i]=temp;
    }
    
        //initialize count to 0 to hold occurences of 1's in array
    int count=0;
        //Look for all values in array
        for(int i=0;i<1000;i++)
        {
                //if current value is 1 increment count
                if(array[i]==1)
                {
                        count++;
                }
        }
        //printing how many 1’s occur in the array 
        cout<<"Number of 1's occures in array: "<<count<<endl;
    return 0;
}

Some Sample Run Results:

Run1:

Number of 1's occures in array: 98

Run2:

Number of 1's occures in array: 112

Run3:

Number of 1's occures in array: 85

Image Of Code:

Image Of All Sample Run Results: