C Exercises: Find the quadrant in which the coordinate point lies

Last update on March 18 2025 13:31:53 (UTC/GMT +8 hours)

9. Coordinate Quadrant Identification

Write a C program to accept a coordinate point in an XY coordinate system and determine in which quadrant the coordinate point lies.

Visual Presentation:

Sample Solution:

C Code:

#include <stdio.h>   // Include the standard input/output header file.

void main()
{
    int co1, co2;   // Declare two integer variables 'co1' and 'co2' to store coordinates.

    printf("Input the values for X and Y coordinate : ");   // Prompt the user to input coordinates.
    scanf("%d %d", &co1, &co2);   // Read and store the user's input in 'co1' and 'co2'.

    if (co1 > 0 && co2 > 0)   // Check if both 'co1' and 'co2' are positive.
        printf("The coordinate point (%d,%d) lies in the First quadrant.\n", co1, co2);   // Print a message indicating the quadrant.
    else if (co1 < 0 && co2 > 0)   // Check if 'co1' is negative and 'co2' is positive.
        printf("The coordinate point (%d,%d) lies in the Second quadrant.\n", co1, co2);   // Print a message indicating the quadrant.
    else if (co1 < 0 && co2 < 0)   // Check if both 'co1' and 'co2' are negative.
        printf("The coordinate point (%d, %d) lies in the Third quadrant.\n", co1, co2);   // Print a message indicating the quadrant.
    else if (co1 > 0 && co2 < 0)   // Check if 'co1' is positive and 'co2' is negative.
        printf("The coordinate point (%d,%d) lies in the Fourth quadrant.\n", co1, co2);   // Print a message indicating the quadrant.
    else if (co1 == 0 && co2 == 0)   // Check if both 'co1' and 'co2' are zero.
        printf("The coordinate point (%d,%d) lies at the origin.\n", co1, co2);   // Print a message indicating that it's at the origin.
}

Output:

Input the values for X and Y coordinate : 7 9                                                                 
The coordinate point (7,9) lies in the First quandrant. 

Flowchart:

For more Practice: Solve these Related Problems:

• Write a C program to determine the quadrant of a point and handle cases when the point lies on one of the axes.
• Write a C program to determine the quadrant of a point and calculate its distance from the origin.
• Write a C program to accept multiple coordinate points and output the quadrant for each using an array.
• Write a C program to determine the quadrant of a point using a switch-case construct instead of if-else statements.

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