Schimbarea a doua elemente intre ele

#include <stdio.h>
#include <conio.h>

void main() {
    int n, v[10], i, p1, p2, aux;

    printf("Introduceti cantitatea vectorului: \n");
    scanf_s("%d", &n);

    while(n > 10 || n < 1){
        printf("Reintroduceti cantitatea vectorului (maxim 10): \n");
        scanf_s("%d", &n);
    }

    for (i = 0; i < n; i++) {
        printf("V[%d]=", i);
        scanf_s("%d", &v[i]);
    }
    printf("\nV=[");
    for (i = 0; i < n; i++) {
        printf("%d ", v[i]);
    }
    printf("]\n");

    printf("Care element doriti sa fie schimbat?\n");
    scanf_s("%d", &p1);

    printf("Cu elementul?\n");
    scanf_s("%d", &p2);

    aux = v[p1-1];
    v[p1-1] = v[p2-1];
    v[p2-1] = aux;

    printf("V=[");
    for (i = 0; i < n; i++) {
        printf("%d ", v[i]);
    }
    printf("]");

    _getch();
}