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Mar 30th, 2020
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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #define N 4
  4. #define M 3
  5.  
  6. int main (int argc, char * argv[])
  7. {
  8. int i, j;
  9. double sum, mat[N][M];
  10. for(i=0;i<N;i++)
  11. {
  12. for(j=0;j<M;j++)
  13. {
  14. printf("ingresso [%d][%d]: ",i,j);
  15. scanf("%lf", &mat[i][j]);
  16. }
  17. }
  18. for(i=0;i<N;i++)
  19. {
  20. for(j=0;j<M;j++)
  21. {
  22. printf("%lf ", mat[i][j]);
  23. }
  24. printf("\n");
  25. }
  26. sum=0;
  27. for(i=0;i<N;i++)
  28. {
  29. for(j=0;j<M;j++)
  30. {
  31. sum=sum+mat[i][j];
  32. }
  33. }
  34. printf("somma totale: %lf \n", sum);
  35. sum=0;
  36. for (i=0;i<N;i++)
  37. {
  38. sum=sum+mat[i][1];
  39. }
  40. printf("somma della seconda colonna è: %lf \n", sum);
  41. sum=0;
  42. for (j=0;j<M;j++)
  43. {
  44. sum=sum+mat[2][j];
  45. }
  46. printf("somma della terza riga è: %lf \n", sum);
  47.  
  48. exit (EXIT_SUCCESS);
  49. }
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