predict the output:

#includestdio.h
 int stuaverage(int mat, int sci, int eng);
int main()
{
    int mat=20;
    int sci=50;
    int eng=90;
    stuaverage(mat,sci, eng);
    return 0;
}
    int stuaverage(int mat, int sci, int eng)
    {
      printf("%d",mat+sci+eng/3);
    }