C Exercises: Check whether three given integer values are in the range 20..50 inclusive

Last update on March 18 2025 13:26:16 (UTC/GMT +8 hours)

8. Triple Range Check 20 to 50

Write a C program that checks if three given integers are in the range of 20 to 50 (inclusive) and returns true if at least one of them is within the range. If none of the integers are within the range, the program returns false.

C Code:

#include <stdio.h>  // Include standard input/output library
#include <stdlib.h> // Include standard library for additional functions

// Declare the function 'test' with three integer parameters
int test(int x, int y, int z);

int main(void)
{
    // Call the function 'test' with arguments 11, 20, and 12, and print the result
    printf("%d", test(11, 20, 12));

    // Print a newline for formatting
    printf("\n");

    // Call the function 'test' with arguments 30, 30, and 17, and print the result
    printf("%d", test(30, 30, 17));

    // Print a newline for formatting
    printf("\n");

    // Call the function 'test' with arguments 25, 35, and 50, and print the result
    printf("%d", test(25, 35, 50));

    // Print a newline for formatting
    printf("\n");

    // Call the function 'test' with arguments 15, 12, and 8, and print the result
    printf("%d", test(15, 12, 8));
}

// Function definition for 'test'
int test(int x, int y, int z)
{
    // Check if either of the following conditions are true for any of the variables (x, y, or z):
    // 1. The variable is between 20 and 50 (inclusive)
    // Return 1 (true) if any condition is true, otherwise return 0 (false).
    return (x >= 20 && x <= 50) || (y >= 20 && y <= 50) || (z >= 20 && z <= 50);
}

Sample Output:

1
1
1
0

Explanation:

int test(int x, int y, int z) {
  return (x >= 20 && x <= 50) || (y >= 20 && y <= 50) || (z >= 20 && z <= 50);
}

The above function test takes three integer parameters ‘x’, ‘y’, and ‘z’. It checks if at least one of the three integers is in the range of 20 to 50 (inclusive).

If any of the parameters ‘x’, ‘y’, or ‘z’ is greater than or equal to 20 and less than or equal to 50, the function returns 1 (true), indicating that at least one of the numbers is within the specified range. Otherwise, it returns 0 (false), indicating that none of the numbers are within the specified range.

Time complexity and space complexity:

Time complexity: The function performs three comparisons and three logical OR operations, all of which are constant time operations. Therefore, the time complexity of the function is O(1).

Space complexity: The function uses a constant amount of space to store the input parameters and the return value, so the space complexity is also O(1).

Pictorial Presentation:

Flowchart:

For more Practice: Solve these Related Problems:

• Write a C program to check if three integers are within the range 25 to 55, returning true if at least two are within the range.
• Write a C program that checks three numbers and returns true if exactly one is outside the range 20 to 50.
• Write a C program to verify if at least one of three given integers lies strictly between 30 and 45.
• Write a C program to check if all three integers are outside the range 20 to 50 and return false in that case.

C Programming Code Editor:

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