How to convert a for loop into a while loop

main.c

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

int main(int argc, char* argv[]) {
    int arr[] = { 1, 2, 3, 4, 5 };
    int n = 5;
    int i;
    
    // For loop
    for (i = 0; i < n; i++) {
        printf("%d ", arr[i]);
    }
    printf("\n");
    
    // While loop
    i = 0;
    while (i < n) {
        printf("%d ", arr[i]);
        i++;
    }
    printf("\n");
    
    // While loop with -1 init
    i = -1;
    while (++i < n) {
        printf("%d ", arr[i]);
    }
    printf("\n");
    
    return 0;
}