// C code
// This program will calculate the sum of 20 positive integers.
// Developer: Derrick CMIS102
// Date: Feb 13,2016
#include <stdio.h>
 
int main() 
{
	     /* variable definition: */
 
     int count, value, sum;
     double avg;
 
     /* Initialize */
 
     count = 0;
 
     sum = 0;
     // Loop through to input values
 
     while (count < 20)
 
     {
 
           printf("Enter a positive Integer\n");
 
           scanf("%d", &value);
           if (value >= 0) {
              sum = sum + value;
              count = count + 1;
           }
           else {
               printf("Value must be positive\n");
           }
 
     }
 
     // Calculate avg. Need to type cast since two integers will yield an integer
 
     avg = (double) sum/count;
 
     printf("average is %lf\n " , avg );
 
	return 0;
}
 

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10
10
10
10
10
20
20
20
20
20
30
30
30
30
30
-10
10.2
N
Y
10.1