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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	int a[100];
  5. 	for (int i = 0; i < 100; i++)
  6. 		a[i] = i;
  7.  
  8. 	int sum = 0;
  9. 	int start = 10, end = 40;
  10.  
  11. 	for (int i = start; i <= end; i++)
  12. 		sum += a[i];
  13.  
  14. 	printf("Sum from a[%d] to a[%d] is: %d\n", start, end, sum);
  15. 	printf("Average from a[%d] to a[%d] is: %g\n", start, end, (float)(sum) / (float)(end - start + 1));
  16.  
  17. 	return 0;
  18. }
  19.  
Success #stdin #stdout 0s 9424KB
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stdin
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Standard input is empty
stdout
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Sum from a[10] to a[40] is: 775
Average from a[10] to a[40] is: 25
https://ideone.com/CJePiG
language:
C (gcc 8.3)
created:
4 years ago
visibility:
secret

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