C Exercises: Check three given integers and return true if the difference between small and medium and the difference between medium and large is same

Last update on July 28 2025 12:50:08 (UTC/GMT +8 hours)

33. Equal Difference Check

Write a C program to check three given integers (small, medium and large) and return true if the difference between small and medium and the difference between medium and large is the same.

C Code:

#include <stdio.h>
#include <stdlib.h>

// Function prototype for 'test'
int test(int x, int y, int z);

int main(void) {
    // Printing the results of calling 'test' function with different arguments
    printf("%d", test(4, 5, 6));
    printf("\n%d", test(7, 12, 13));
    printf("\n%d", test(-1, 0, 1));
}

// Definition of the 'test' function
int test(int x, int y, int z) {
    // Checking various conditions and returning the result of the comparisons
    if (x > y && x > z && y > z) return x - y == y - z;
    if (x > y && x > z && z > y) return x - z == z - y;
    if (y > x && y > z && x > z) return y - x == x - z;
    if (y > x && y > z && z > x) return y - z == z - x;
    if (z > x && z > y && x > y) return z - x == x - y;

    // If none of the above conditions are met, return the result of the final comparison
    return z - y == y - x;
}

Sample Output:

1
0
1

Pictorial Presentation:

Flowchart:

For more Practice: Solve these Related Problems:

• Write a C program to check if three numbers form an arithmetic sequence.
• Write a C program to verify if three integers are evenly spaced, allowing for a common difference of zero.
• Write a C program to determine if three given numbers have the same difference when sorted in ascending order.
• Write a C program to check if the difference between the first and second number is double the difference between the second and third.

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