#include <stdio.h>
#include <stdlib.h>
void main()
{
int Max = 0;
int i;
float Number[20];
float Summary;
float Average;
Summary = 0;
printf("Please input the number of data : ");
scanf("%d", &Max);
if (Max < 20)
{
for (i = 0; i < Max; i++)
{
printf("Please input a number : ");
scanf("%f", &Number[i]);
Summary += Number[i];
}
Average = Summary / Max;
printf("The average is %5.2f \n", Average);
}
else
printf("Please input a number less than 20.");
}