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  1. #include <iostream>
  2. #include <iomanip>
  3. using namespace std;
  4.  
  5. int main() {
  6. 	int n;
  7. 	cin>>n;
  8. 	int**x=new int* [n];
  9. 	for(int i=0;i<n;i++){
  10. 		x[i]=new int[n];
  11. 	}
  12. 	int**y=new int* [n];
  13. 	for(int i=0;i<n;i++){
  14. 		y[i]=new int[n];
  15. 	}
  16. 	int**z=new int* [n];
  17. 	for(int i=0;i<n;i++){
  18. 		z[i]=new int[n];
  19. 	}
  20.  
  21.  
  22. 	srand (time(NULL));
  23. 	for(int i=0;i<n;i++ ){
  24. 		for(int j=0;j<n;j++){
  25. 			x[i][j]=(rand() % 11);
  26. 		}
  27.  
  28. 	}
  29. 	for(int i=0;i<n;i++ ){
  30. 		for(int j=0;j<n;j++){
  31. 		//	y[i][j]=(rand() % 11)*4-20;
  32. 		if (i==j) y[i][j]=1;
  33. 		else y[i][j]=0;
  34. 		}
  35.  
  36.  
  37. 	}
  38. for(int i=0;i<n;i++){
  39. 	for(int j=0;j<n;j++){
  40. 		int s=0;
  41. 		for(int p=0;p<n;p++){
  42. 			s=s+x[i][p]*y[p][j];
  43. 		}
  44. 		z[i][j]=s;
  45. 	}
  46. }
  47.  
  48.  
  49.  
  50. 	cout<<"X="<<endl;
  51. 	for(int i=0;i<n;i++ ){
  52. 		for(int j=0;j<n;j++){
  53. 			cout<<x[i][j]<<" ";
  54. 		}
  55. 		cout<<endl;
  56.  
  57. 	}
  58. 	cout<<"Y="<<endl;
  59. 	for(int i=0;i<n;i++ ){
  60. 		for(int j=0;j<n;j++){
  61. 			cout<<y[i][j]<<" ";
  62. 		}
  63. 		cout<<endl;
  64.  
  65. 	}
  66. 	cout<<"Z="<<endl;
  67.  
  68. 	for(int i=0;i<n;i++ ){
  69. 		for(int j=0;j<n;j++){
  70. 			if (i>=j) cout<<0<<" ";
  71. 			else cout<<z[i][j]<<" ";
  72. 		}
  73. 		cout<<endl;
  74. }
  75.  
  76. cout<<"Z="<<endl;
  77.  
  78. 	for(int i=0;i<n;i++ ){
  79. 		for(int j=0;j<n;j++){
  80. 			cout<<z[i][j]<<" ";
  81. 		}
  82. 		cout<<endl;
  83.  
  84. 	}
  85.  
  86. 	return 0;
  87. }
Success #stdin #stdout 0.01s 5316KB
comments (?)
stdin
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4
1
stdout
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X=
0 3 9 10 
7 3 9 10 
6 3 1 9 
5 10 8 0 
Y=
1 0 0 0 
0 1 0 0 
0 0 1 0 
0 0 0 1 
Z=
0 3 9 10 
0 0 9 10 
0 0 0 9 
0 0 0 0 
Z=
0 3 9 10 
7 3 9 10 
6 3 1 9 
5 10 8 0
https://ideone.com/jcLGeK
language:
C++ (gcc 8.3)
created:
2 days ago
visibility:
public

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