Summing up cubes of n numbers

#include <stdio.h>

int main() {
    int n, sum = 0;
    printf("Enter a positive integer n: ");
    scanf("%d", &n);
    for (int i = 1; i <= n; i ++) {
        sum += i * i * i;
    }
    printf("The sum of cubes of n numbers up to %d is: %d\n", n, sum);
    return 0;
}