如何在C中打印没有整数值的元素的空值

#include <stdio.h>

void printNonIntegerValues(int arr[], int size) {
    for (int i = 0; i < size; i++) {
        if (arr[i] != (int)arr[i]) {
            printf("Element at index %d is not an integer value: %f\n", i, arr[i]);
        }
    }
}

int main() {
    int arr[] = {1, 2.5, 3, 4.7, 5};
    int size = sizeof(arr) / sizeof(arr[0]);

    printNonIntegerValues(arr, size);

    return 0;
}

Element at index 1 is not an integer value: 2.500000
Element at index 3 is not an integer value: 4.700000