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- #include<stdio.h>
- #include<math.h>
- int determinant(int[3][3]);
- void create(int[3][3]);
- void display(int[3][3]);
- int main()
- {
- int mat[3][3];
- int d;
- printf("\n Enter elements of the matrix: ");
- create(mat);
- printf("\n The Matrix: \n");
- display(mat);
- d=determinant(mat);
- printf("\n The determinant for given matrix: %d",d);
- if(d==0)
- printf("\n Matrix is singular.");
- else
- printf("\n Matrix is not singular.");
- return 0;
- }
- /* Function used to create a matrix */
- void create(int mat[3][3])
- {
- int i,j,element;
- for(i=0;i<3;i++)
- {
- for(j=0;j<3;j++)
- {
- printf("Enter the element");
- scanf("%d",&element);
- mat[i][j]=element;
- }
- }
- printf("\n\n");
- }
- /* Function used to display the contents of a matrix */
- void display(int mat[3][3])
- {
- int i,j;
- for(i=0;i<3;i++)
- {
- for(j=0;j<3;j++)
- {
- printf("%d\t",mat[i][j]);
- }
- printf("\n");
- }
- printf("\n\n");
- }
- /* Function to calculate the determinant value of a 3x3 matrix */
- int determinant(int mat[3][3])
- {
- int i,j,k;
- int sum,p;
- sum=0;
- j=1;
- k=2;
- for(i=0;i<3;i++)
- {
- p=pow(-1,i);
- if(i==2)
- k=1;
- sum=sum+p*(mat[0][i]*(mat[1][j]*mat[2][k]-mat[2][j]*mat[1][k]));
- j=0;
- }
- return sum;
- }
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