C++ Code to count Positive, Negative and zero in an array

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C++ Code to count Positive, Negative and zero in an array

In this article, we will discuss the concept of C++ Code to count Positive, Negative and zero in an array

In this program, we are going to learn how to count Positive numbers, Negative numbers and zeros in an array using several ways in C++ language.

This is done using for loop , while loop , do-while loop and function in C++ language

Program to count Positive, Negative and zero in an array

Count Positive, Negative and zero in an array using for loop

In this program, we will count Positive numers, Negative numbers and zeros in an array using a for loop in C++ language

Program 1

#include <iostream>
#include <conio.h>
using namespace std;

int main()
{
    int i,size,countPos=0, countNeg=0, countZero=0,arr[100];
    cout<<"Enter the array size\n";
    cin>>size;
    cout<<"Enter "<<size<<" elements\n";
    for(i=0; i<size; i++){
     cin>>arr[i];
    }
    for(i=0; i<size; i++){
     if(arr[i]<0){
        countNeg++;
     }
     else if(arr[i]>0){
        countPos++;
     }
     else{
        countZero++;
     }
    }
    cout<<"Positive numbers are: "<<countPos<<endl;
    cout<<"Negative numbers are:"<<countNeg<<endl;
    cout<<"zeros are "<<countZero;
    getch();
    return 0;
}

When the above code is executed it produces the following result

Enter the array size
11
Enter 11 elements
56
0
-67
49
09
0
-54
98
-34
98
-45

Positive numbers are:5
Negative numbers are: 4
zeros are: 2

Count Positive, Negative and zero in an array using while loop

In this program, we will count Positive numbers, Negative numbers and zeros in an array using a while loop in C++ language

Program 2

#include <iostream>
#include <conio.h>
using namespace std;

int main()
{
    int i,size,countPos=0, countNeg=0, countZero=0,arr[100];
    cout<<"Enter the array size\n";
    cin>>size;
    cout<<"Enter "<<size<<" elements\n";
    i=0;
    while(i<size){
     cin>>arr[i];
      i++;
    }
    i=0;
    while(i<size){
     if(arr[i]<0){
        countNeg++;
     }
     else if(arr[i]>0){
        countPos++;
     }
     else{
        countZero++;
     }
      i++;
    }
    cout<<"Positive numbers are: "<<countPos<<endl;
    cout<<"Negative numbers are: "<<countNeg<<endl;
    cout<<"zeros are "<<countZero;
    getch();
    return 0;
}

When the above code is executed it produces the following result

Enter the array size
10
Enter 10 elements

345
0
-562
678
-543
678
0
456
-542
874

Positive numbers are:5
Negative numbers are: 3
zeros are: 2

Count Positive, Negative and zero in an array using do-while loop

In this program, we will count Positive numbers, Negative numbers and zeros in an array a do-while loop in C++ language

Program 3

#include <iostream>
#include <conio.h>
using namespace std;

int main()
{
    int i,size,countPos=0, countNeg=0, countZero=0,arr[100];
    cout<<"Enter the array size\n";
    cin>>size;
    cout<<"Enter "<<size<<" elements\n";
    i=0;
   do{
     cin>>arr[i];
      i++;
    } while(i<size);
    i=0;
    do{
     if(arr[i]<0){
        countNeg++;
     }
     else if(arr[i]>0){
        countPos++;
     }
     else{
        countZero++;
     }
      i++;
    }while(i<size);
    cout<<"Positive numbers are: "<<countPos<<endl;
    cout<<"Negative numbers are: "<<countNeg<<endl;
    cout<<"zeros are "<<countZero;
    getch();
    return 0;
}

When the above code is executed it produces the following result

Enter the array size
8
Enter 8 elements

45
0
-54
34
67
-34
89
76

Positive numbers are:5
Negative numbers are: 2
zeros are: 1

Count Positive, Negative and zero in an array using function

In this program, we will count Positive numbers, Negative numbers and zeros in an array using function in C++ language

Program 4

#include <iostream>
#include <conio.h>
using namespace std;

int countPositive(int arr[],int size);
int countNegative(int arr[],int size);
int countZero(int arr[],int size);
int main()
{
    int size,i,arr[10];
    int posCount=0,negCount=0,zeroCount=0;
    cout<<"Please enter the size of an array \n";
    cin>>size;
      cout<<"\nPlease enter the array elements \n";
    for(i=0; i<size; i++){
        cin>>arr[i];

    }
    cout<<"\nTotal positive numbers in this array="<<countPositive(arr,size);
    cout<<"\nTotal Negative numbers in this array="<<countNegative(arr,size);
    cout<<"\n\nTotal zeros in this array= "<<countZero(arr,size);
    getch();
    return 0;
}

int countPositive(int arr[],int size){
int i, posCount=0;
cout<<"\nList of positive number in this array: \n";
 for(i=0; i<size; i++){
        if(arr[i]>0){
          cout<<arr[i];
          cout<<"\n";
            posCount++;
        }
    }
    return posCount;

}

int countNegative(int arr[],int size){
int i, negCount=0;
cout<<"\n\nList of negative number in this array: \n"<<endl;
 for(i=0; i<size; i++){
        if(arr[i]<0){
            cout<<arr[i];
            cout<<"\n";
            negCount++;
        }
    }
    return negCount;

}

int countZero(int arr[],int size){
int i, zeroCount=0;

 for(i=0; i<size; i++){
        if(arr[i]==0){
            zeroCount++;
        }
    }
    return zeroCount;

}

When the above code is executed it produces the following result