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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. void make_zero(std::vector<std::vector<double> > & to_zero) {
  5. 	for (int i = 0; i < to_zero.size(); ++i) {
  6. 		for (int j = 0; j < to_zero[i].size(); ++j) {
  7. 			to_zero[i][j] = 0;
  8. 		}
  9. 	}
  10. }
  11.  
  12.  
  13. void print_double_vector(const std::vector<std::vector<double> > & to_print) {
  14. 	for (int i = 0; i < to_print.size(); ++i) {
  15. 		for (int j = 0; j < to_print[i].size(); ++j) {
  16. 			std::cout << to_print[i][j] << " ";
  17. 		}
  18. 		std::cout << std::endl;
  19. 	}
  20. 	std::cout << std::endl;
  21. }
  22.  
  23.  
  24. int main() {
  25. 	// your code goes here
  26. 	int n, m;
  27. 	std::cin >> n >> m;
  28. 	std::vector<std::vector<double> > d(n, std::vector<double>(m));
  29. 	print_double_vector(d);
  30. 	make_zero(d);
  31. 	print_double_vector(d);
  32. 	return 0;
  33. }
Success #stdin #stdout 0s 3420KB
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stdin
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4 5
stdout
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0 0 0 0 0 
0 0 0 0 0 
0 0 0 0 0 
0 0 0 0 0 

0 0 0 0 0 
0 0 0 0 0 
0 0 0 0 0 
0 0 0 0 0
https://ideone.com/0X53Yj
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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