C++ program to find the Quadrant in which Coordinates lie

February 9, 2021

Program to find the Quadrant in which Coordinates lie

If both the coordinates are positive then the coordinates lie in the 1st quadrant
if x coordinate is negative and the y coordinate is positive then the coordinates lie in the 2nd quadrant.
If both are negative then the coordinates lie in the 3rd quadrant.
if y coordinate is negative and the x coordinate is positive then the coordinates lie in the 4th quadrant.
If the x coordinate is 0 then the coordinates lie on the y axis.
If the y coordinate is 0 then the coordinates lie on the x axis.
If both are zero then they lie on the origin.

To find the quadrants we will be using if else statements.

Algorithm:-

User gives two inputs(x & y coordinates).
The inputs are stored in two int type variables say x & y.
If x is equal to 0 then the coordinates lie on the y axis.

if(x==0)

4. If y is equal to 0 then the coordinates lie on the x axis.

else if(y==0)

5. If x & y are positive then the coordinates lie in the 1st quadrant.

else if(x>0&&y>0)

6. If x is negative and y is positive then the coordinates lie in the 2nd quadrant.

else if(x<0&&y>0)

7. If x & y are negative then the coordinates lie in the 3rd quadrant.

else if(x<0&&y<0)

8. If x is positive and y is positive then the coordinates lie in the 4th quadrant.

else if(x>0&&y<0)

9. Otherwise the coordinate lies on the origin.

C++ Code:-

    
    //C++ program
    //Quadrants in which coordinates lie
    #include<iostream>
    using namespace std;
    //main program
    int main()
    {
        int x, y;
        cout<<“Enter coordinates: \n“;
        cin>>x>>y;
        //checking for quadrants and axis
        if(x==0)
            cout<<x<<“,”<<y<<” lies on y axis”;
        else if(y==0)
            cout<<x<<“,”<<y<<” lies on x axis”;
        else if(x>0&&y>0)
            cout<<x<<“,”<<y<<” lies in 1st quadrant”;
        else if(x<0&&y>0)
            cout<<x<<“,”<<y<<” lies in 2nd quadrant”;
        else if(x<0&&y<0)
            cout<<x<<“,”<<y<<” lies in 3rd quadrant”;
        else if(x>0&&y<0)
            cout<<x<<“,”<<y<<” lies in 4th quadrant”;
        else
            cout<<x<<“,”<<y<<” lies on the origin”;
        return 0;   
    }

    Output

    Enter coordinates: 
    1
    –8
    1,-8 lies in 4th quadrant

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