#include<stdio.h>
#include<math.h>
void main()
{
float a[10], *ptr, mean, std, sum=0, sumstd=0;
int n,i;
printf("Enter the no of elements\n");
scanf("%d",&n);
printf("Enter the array elements \n");
for(i=0;i<n;i++)
{
scanf("%f",&a[i]);
}
ptr=a;
for(i=0;i<n;i++)
{
sum=sum+ *ptr; ptr++;
}
mean=sum/n;
ptr=a;
for(i=0;i<n;i++)
{
sumstd=sumstd + pow((*ptr - mean),2);
ptr++;
}
std = sqrt(sumstd/n);
printf("Sum=%.3f\t",sum);
printf("Mean=%.3f\t",mean);
printf("Standard deviation=%.3f\t", std);
}
Output
Enter the number of elements 5
Enter the array elements are 1 5 9 6 7
Sum=28
Mean=5.6
Standard deviation=2.09
