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Nov 21st, 2018
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  1. #include<stdio.h>
  2.  
  3.  
  4. float dotProduct(int n, float v[n], float c[n])
  5. {
  6. int i;
  7. float P=0;
  8. for(i=0;i<n;i++)
  9. P=P+v[i]*c[i];
  10. return P;
  11. }
  12.  
  13. int main()
  14. {
  15. int n,i;
  16. scanf("%d", &n);
  17. float v[n],c[n];
  18. for(i=0;i<n;i++)
  19. {
  20. scanf("%f",&v[i]);
  21. }
  22. for(i=0;i<n;i++)
  23. {
  24. scanf("%f",&c[i]);
  25. }
  26. float P=1;
  27. P=dotProduct(n,v,c);
  28. printf("%.3f",P);
  29.  
  30. return 0;
  31. }
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