3分钟锻炼，4分钟采纳

Question

Answer 1

int main()
{
    int arr[10]={12,34,4,23,38,45,18,3,11,24};
    double sum=0;
    for(int i=1;i<10;i++)
    {
        double avg=sqrt((arr[i]+arr[i-1])/2.0);
        
        sum+=avg;
       
    }
    printf("%.2lf",sum);
    return 0;
}