Article | C Program To Find The Determinant of Matrix

To Find The Determinant of Matrix in program C

1. #include<stdio.h>


2. #include<conio.h>


3. #define LIMIT 10


4. void main()


5. {


6. int chckdgnl();


7. float deter();


8. float a[LIMIT][LIMIT],value;


9. int i,j,order;


10. clrscr();


11. printf("Enter order of determent :");


12. scanf("%d",&order);


13. for(i=0;i<order;i++)


14. {


15. for(j=0;j<order;j++)


16. {


17. printf("Enter (%d,%d) element of the determent :",i+1,j+1);


18. scanf("%f",&a[i][j]);


19. }


20. }




22. if(chckdgnl(a,order)==0)


23. value=0;


24. else


25. value=deter(a,order);


26. printf("Determinent Value :%f",value);


27. getch();


28. }




30. float deter(float a[][LIMIT],int forder)


31. {


32. int i,j,k;


33. float mult;


34. float deter=1;


35. for(i=0;i<forder;i++)


36. {


37. for(j=0;j<forder;j++)


38. {


39. mult=a[j][i]/a[i][i];


40. for(k=0;k<forder;k++)


41. {


42. if(i==j) break;


43. a[j][k]=a[j][k]-a[i][k]*mult;


44. }


45. }


46. }


47. for(i=0;i<forder;i++)


48. {


49. deter=deter*a[i][i];


50. }


51. return(deter);


52. }






55. int chckdgnl(float array[][LIMIT],int forder)


56. {


57. int i,j,k;


58. float nonzero;


59. for(i=0;i<forder;i++)


60. {


61. if(array[i][i]==0)


62. {


63. for(j=0;j<forder;j++)


64. {


65. if(array[i][j]!=0)


66. {


67. k=j;


68. break;


69. }


70. if(j==(forder)) //forder-1


71. return(0);


72. }


73. for(j=0;j<forder;j++)


74. {


75. array[j][i]=array[j][i]-array[j][k];


76. }


77. }


78. }


79. return(1);


80. }

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