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  1. #include <iostream>
  2. #include <cmath>
  3.  
  4. using namespace std;
  5.  
  6.  
  7.  
  8. int det(double **A, int m) {
  9. 	int i, j, d, k, n;
  10. 	double **p = new double*[m];
  11. 	for (i = 0; i<m; i++)
  12. 		p[i] = new double[m];
  13. 	j = 0; d = 0;
  14. 	k = 1;
  15. 	n = m - 1;
  16. 	if (m<1)  cout << "Определитель вычислить невозможно!";
  17. 	if (m == 1)
  18. 	{
  19. 		d = A[0][0];
  20. 		return(d);
  21. 	}
  22. 	if (m == 2)
  23. 	{
  24. 		d = A[0][0] * A[1][1] - (A[1][0] * A[0][1]);
  25. 		return(d);
  26. 	}
  27. 	if (m>2)
  28. 	{
  29. 		for (i = 0; i<m; i++)
  30. 		{
  31. 			rec(A, p, i, 0, m);
  32. 			d += k * A[i][0] * det(p, n);
  33. 			k = -k;
  34. 		}
  35. 	}
  36. 	return(d);
  37. }
  38.  
  39.  
  40.  
  41. int main()
  42. {
  43. 	setlocale(LC_ALL, "Russian");
  44. 	int m, i, j, d;
  45. 	cout << "Введите размерность квадратной матрицы: ";
  46. 	cin >> m;
  47. 	cout << "Введите матрицу размерностью " << m << "x" << m << endl;
  48. 	double **A = new double*[m];
  49. 	for (i = 0; i<m; i++)
  50. 	{
  51. 		A[i] = new double[m];
  52. 		for (j = 0; j<m; j++)
  53. 			cin >> A[i][j];
  54. 	}
  55. 	d = det(A, m);
  56. 	cout << "Определитель матрицы равен: " << d << endl;
  57. 	return 0;
  58. }
  59.  
Compilation error #stdin compilation error #stdout 0s 0KB
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compilation info 
prog.cpp: In function ‘int det(double**, int)’:
prog.cpp:31:21: error: ‘rec’ was not declared in this scope
    rec(A, p, i, 0, m);
                     ^
stdout
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Standard output is empty
https://ideone.com/BF4ggr
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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