Question

How to check if an array contains a pair of numbers whose product is even in C

Answer 1

#include <stdio.h>

// A produce of a pair of integers will always be even if at least 1 of them are even
 
int arrayContainsAPairOfEvenProduct(int arr[], int size) {
    int oddCount = 0;
 
    for (int i = 0; i < size; i++) {
        if (arr[i] % 2 == 0) {
            return 1;
        }
    }
 
    return 0;
}
 
int main()
{
    int arr[] = {1, 1, 3, 3, 5, 5, 8, 9, 9, 1}; // 8 * ? = Even
    int size = sizeof(arr) / sizeof(arr[0]);
  
    printf("%d\n", arrayContainsAPairOfEvenProduct(arr, size));
}
 
 
 
/*
run:
 
1
 
*/

 

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