C Exercises: Check whether a given array of integers of length 2, does not contain 15 or 20

Last update on July 28 2025 12:50:04 (UTC/GMT +8 hours)

42. Array of Two: Exclude 15 and 20

Write a C program to check if an array of integers with length 2 does not contain 15 or 20.

C Code:

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

// Function prototype for 'test'
int test(int nums[]);

int main(void){
    // Declaration and initialization of variables
    int arr_size;
    int array1[] = {12, 20};

    // Printing the result of calling 'test' function with different arrays
    printf("%d", test(array1));

    int array2[] = {14, 15};
    printf("\n%d", test(array2));

    int array3[] =  {11, 21};
    printf("\n%d", test(array3));
}       

// Definition of the 'test' function
int test(int nums[])
{
    // Checking if none of the elements in the array are equal to 12 or 15
    return nums[0] != 12 && nums[0] != 15 && nums[1] != 12 && nums[1] != 15;
}

Sample Output:

0
0
1

Pictorial Presentation:

Flowchart:

For more Practice: Solve these Related Problems:

• Write a C program to ensure an array of two integers does not contain 10 or 30.
• Write a C program to check if an array of length 2 has no even numbers.
• Write a C program to determine if an array of two numbers excludes both 7 and 8.
• Write a C program to verify that an array of two integers does not contain any multiples of 3.

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