Bubble sort C

#include <stdio.h>
#include <string.h>
int fun (int *a,int n) {
for (int i=0; i<8; i++) {//The function of this loop is to perform the following loop multiple times
for (int j=0; j<n-i; J + +) {//The function of a loop is to compare the number before and the back of the sort
if (A[j]>a[j+1]) {//two digits it's bigger, it's in the back.
int C=A[J];
A[J]=A[J+1];
A[j+1]=c;
}
}
}
for (int k=0; k<n; k++) {//The function of this loop is to put the newly sorted output
printf ("%3d\n", A[k]);
}
return 0;
}
int main () {
int a[8]={12,32,13,45,98,67,47,89};//wanted to use the keyboard to enter, but it took a long time the size of the array or to be fixed
printf ("%d", Fun (a,8));
}

Bubble sort C