给定坐标(x，y)，确定笛卡尔平面的象限。
图片来源：wikipedia.org
例子 ：
Input : x = 1, y = 1
Output : lies in 1st quadrant
Input : x = 0, y = 0
Output : lies at origin需要检查9个条件以确定这些点在哪里–
If in first quadrant then, x > 0 and y > 0
If in second quadrant then, x < 0 and y > 0
If in third quadrant then, x < 0 and y < 0
If in fourth quadrant then, x > 0 and y < 0
If in positive x-axis then, y = 0 and x > 0
If in negative x-axis then, y = 0 and x < 0
If in positive y-axis then, x = 0 and y > 0
If in negative y-axis then, x = 0 and y < 0
If at origin then, x = 0 and y = 0 下面是上述方法的实现：
C++
// CPP program to check quadrant
#include
using namespace std;
// Function to check quadrant
void quadrant(int x, int y)
{
if (x > 0 and y > 0)
cout << "lies in First quadrant";
else if (x < 0 and y > 0)
cout << "lies in Second quadrant";
else if (x < 0 and y < 0)
cout << "lies in Third quadrant";
else if (x > 0 and y < 0)
cout << "lies in Fourth quadrant";
else if (x == 0 and y > 0)
cout << "lies at positive y axis";
else if (x == 0 and y < 0)
cout << "lies at negative y axis";
else if (y == 0 and x < 0)
cout << "lies at negative x axis";
else if (y == 0 and x > 0)
cout << "lies at positive x axis";
else
cout << "lies at origin";
}
// Driver code
int main()
{
int x = 1, y = 1;
// Function call
quadrant(x, y);
return 0;
} Java
// Java program to check quadrant
import java.io.*;
class GFG {
// Function to check quadrant
static void quadrant(int x, int y)
{
if (x > 0 && y > 0)
System.out.println("lies in First quadrant");
else if (x < 0 && y > 0)
System.out.println("lies in Second quadrant");
else if (x < 0 && y < 0)
System.out.println("lies in Third quadrant");
else if (x > 0 && y < 0)
System.out.println("lies in Fourth quadrant");
else if (x == 0 && y > 0)
System.out.println("lies at positive y axis");
else if (x == 0 && y < 0)
System.out.println("lies at negative y axis");
else if (y == 0 && x < 0)
System.out.println("lies at negative x axis");
else if (y == 0 && x > 0)
System.out.println("lies at positive x axis");
else
System.out.println("lies at origin");
}
// Driver Code
public static void main(String[] args)
{
int x = 1, y = 1;
// Function Calling
quadrant(x, y);
}
}Python
''' Python program to check quadrant'''
# Function to check quadrant
def quadrant(x, y):
if (x > 0 and y > 0):
print ("lies in First quadrant")
elif (x < 0 and y > 0):
print ("lies in Second quadrant")
elif (x < 0 and y < 0):
print ("lies in Third quadrant")
elif (x > 0 and y < 0):
print ("lies in Fourth quadrant")
elif (x == 0 and y > 0):
print ("lies at positive y axis")
elif (x == 0 and y < 0):
print ("lies at negative y axis")
elif (y == 0 and x < 0):
print ("lies at negative x axis")
elif (y == 0 and x > 0):
print ("lies at positive x axis")
else:
print ("lies at origin")
# Driver code
x = 1
y = 1
quadrant(x, y)C#
// C# program to check quadrant
using System;
class GFG {
// Function to check quadrant
static void quadrant(int x, int y)
{
if (x > 0 && y > 0)
Console.WriteLine("lies in First quadrant");
else if (x < 0 && y > 0)
Console.WriteLine("lies in Second quadrant");
else if (x < 0 && y < 0)
Console.WriteLine("lies in Third quadrant");
else if (x > 0 && y < 0)
Console.WriteLine("lies in Fourth quadrant");
else if (x == 0 && y > 0)
Console.WriteLine("lies at positive y axis");
else if (x == 0 && y < 0)
Console.WriteLine("lies at negative y axis");
else if (y == 0 && x < 0)
Console.WriteLine("lies at negative x axis");
else if (y == 0 && x > 0)
Console.WriteLine("lies at positive x axis");
else
Console.WriteLine("lies at origin");
}
// Driver Code
public static void Main()
{
int x = 1, y = 1;
// Function Calling
quadrant(x, y);
}
}
// This code is contributed by vt_m.PHP
0 and $y > 0)
echo("lies in First quadrant");
else if ($x < 0 and $y > 0)
echo("lies in Second quadrant");
else if ($x < 0 and $y < 0)
echo("lies in Third quadrant");
else if ($x > 0 and $y < 0)
echo("lies in Fourth quadrant");
else if ($x == 0 and $y > 0)
echo("lies at positive y axis");
else if ($x == 0 and $y < 0)
echo("lies at negative y axis");
else if ($y == 0 and $x < 0)
echo("lies at negative x axis");
else if ($y == 0 and $x > 0)
echo("lies at positive x axis");
else
echo("lies at origin");
}
// Driver code
$x = 1; $y = 1;
// Function call
quadrant($x, $y);
// This code is contributed by Ajit.
?>Javascript
输出 ：
lies in First quadrant