26 lines
817 B
C
26 lines
817 B
C
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#include<stdio.h>
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int main()
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{
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int a[3][3],i,j;
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float determinant=0;
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printf("Enter the 9 elements of matrix: ");
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for(i=0; i<3; i++)
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for(j=0; j<3; j++)
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scanf("%d",&a[i][j]);
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printf("\nThe matrix is\n");
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for(i=0; i<3; i++)
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{
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printf("\n");
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for(j=0; j<3; j++)
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printf("%d\t",a[i][j]);
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}
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for(i=0; i<3; i++)
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determinant = determinant + (a[0][i]*(a[1][(i+1)%3]*a[2][(i+2)%3] - a[1][(i+2)%3]*a[2][(i+1)%3]));
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printf("\nInverse of matrix is: \n");
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for(i=0; i<3; i++)
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{
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for(j=0; j<3; j++)
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printf("%.3f\t",((a[(i+1)%3][(j+1)%3] * a[(i+2)%3][(j+2)%3]) - (a[(i+1)%3][(j+2)%3]*a[(i+2)%3][(j+1)%3]))/ determinant);
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printf("\n");
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}
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}
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