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  1. #include <stdio.h>
  2.  
  3. int main(void)
  4. {
  5. int i, inputN, sum;
  6.  
  7. printf("input num: ");
  8. scanf("%d", &inputN);
  9.  
  10. sum = 0;
  11.  
  12. for(i = 1; i <= inputN; i++)
  13. {
  14. sum += i * i;
  15. }
  16.  
  17. printf("sum = %d", sum);
  18.  
  19. return 0;
  20. }
  21.  
Success #stdin #stdout 0s 2252KB
stdin
10
stdout
input num: sum = 385