Question 11 Assignment

#include<stdio.h>
#include<math.h>
//double sum(double one,double two,double three,double four,double five)
//{
 double avg();
 double std_deviation();
    double total()
    {
        int i;
        double input;
        double sum=0;
        double variance=0;
        printf("enter number\n");
        for(i=0;i<=4;i++)
        {
            scanf("%lf",&input);
            variance=variance+pow(input,2);
            sum=sum+input;
        }
        printf("The sum is %.2lf",sum);
        printf("\nThe average is %.2lf",avg(sum));
        //printf("\n The variance is %.2lf",variance);
        printf("\nThe Standard Deviation is %.2lf",std_deviation(variance));
        return sum;
    }



//}
double avg(double sum)
{

    return sum/5;
}


double std_deviation(double variance)
{
    return sqrt(variance);
}
int main()
{
    total();
   // printf("\nThe average is %.2lf",avg(total()));
    return 0;
}