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  1. #include <stdio.h>
  2.  
  3. int main() {
  4.     int n, i;
  5.     float sum = 0.0, average;
  6.  
  7.     printf("Enter the number of elements: ");
  8.     scanf("%d", &n);
  9.  
  10.     int arr[n];
  11.     printf("Enter %d elements:\n", n);
  12.     for (i = 0; i < n; i++) {
  13.         scanf("%d", &arr[i]);
  14.         sum += arr[i];
  15.     }
  16.  
  17.     average = sum / n;
  18.  
  19.     printf("Sum of elements = %.2f\n", sum);
  20.     printf("Average of elements = %.2f\n", average);
  21.  
  22.     return 0;
  23. }
Success #stdin #stdout 0s 5308KB
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stdin
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2
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stdout
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Enter the number of elements: Enter 2 elements:
Sum of elements = 10.00
Average of elements = 5.00
https://ideone.com/3kw4dZ
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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