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Dec 18th, 2014
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  1. #include <stdio.h>
  2.  
  3. int main()
  4. {
  5. int i, j;
  6. double matriz[12][12], soma = 0, contador = 0;
  7. char opcao;
  8. scanf("%c", &opcao);
  9. if(opcao == 'S')
  10. {
  11. for(i = 0; i < 12; i++)
  12. {
  13. for(j = 0; j < 12; j++)
  14. {
  15. scanf("%lf", &matriz[i][j]);
  16. if(i < j && j < 12 - 1 - i && i <= 4)
  17. {
  18. soma += matriz[i][j];
  19. }
  20. }
  21. }
  22. printf("%.1f\n", soma);
  23. }
  24. if(opcao == 'M')
  25. {
  26. for(i = 0; i < 12; i++)
  27. {
  28. for(j = 0; j < 12; j++)
  29. {
  30. scanf("%lf", &matriz[i][j]);
  31. if(i < j && j < 12 - 1 - i && i <= 4)
  32. {
  33. soma += matriz[i][j];
  34. contador++;
  35. }
  36. }
  37. }
  38. printf("%.1f\n", soma/contador);
  39. }
  40. return 0;
  41. }
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