bubble sort in c

#include <stdio.h>


int main(void) {
    int idAluno[10] = {0};
    float notaAluno[10] = {0};


    // Entering the id data
    for (int i=0; i<10; i++) {
        printf("Digite o ID do aluno %d: ", i);
        scanf("%d", &idAluno[i]);
    }

    // Entering average
    for (int i=0; i<10; ++i) {
        printf("A nota do aluno %d: ", i);
        scanf("%f", &notaAluno[i]);
    }

    // Ordenation algorithm
    for (int i=0; i<10; i++) {
        for (int j=0; j<10-i; j++) {
            if (notaAluno[i] > notaAluno[j]) {
                float swp_average = notaAluno[i];
                int swp_id = idAluno[i];
                notaAluno[i] = notaAluno[j];
                notaAluno[j] = swp_average;
                idAluno[i] = idAluno[j];
                idAluno[j] = swp_id;
            }
        }
    }

    // Listing the id
    for (int i=0; i<10; ++i) {
        printf("ID do aluno %d: %d\n", i, idAluno[i]);
    }

    // Listing the average
    for (int i=0; i<10; ++i) {
        printf("A nota do aluno %d: %.2f\n", i, notaAluno[i]);
    }

    return 0;
}