Linear Algebra and the C Language/a0i1

__NOTOC__ Install and compile this file in your working directory. /* ------------------------------------ */ /* Save as : c00b.c */ /* ------------------------------------ */ #include "v_a.h" /* ------------------------------------ */ void fun(int r) { double **A = rskewsymmetric_mR( i_mR(r,r), 9); clrscrn(); printf(" If Rn is odd det_R(A) = 0\n\n" " A[R%d,C%d] : \n",rsize_R(A),csize_R(A)); p_mR(A, S7,P3,C6); printf(" det_R(A) = %+.4f\n",det_R(A)); f_mR(A); } /* ------------------------------------ */ int main(void) { time_t t; srand(time(&t)); do { fun(rp_I(R3)+R2); } while(stop_w()); return 0; } /* ------------------------------------ */ /* ------------------------------------ */ If the number of rows is odd the determinant is zero Screen output example: If Rn is odd det_R(A) = 0 A[R4,C4] : +0.000 +1.000 +4.000 +3.000 -1.000 +0.000 -8.000 +8.000 -4.000 +8.000 +0.000 -6.000 -3.000 -8.000 +6.000 +0.000 det_R(A) = +3844.0000 Press return to continue Press X return to stop If Rn is odd det_R(A) = 0 A[R5,C5] : +0.000 +2.000 +3.000 +8.000 -1.000 -2.000 +0.000 +9.000 -3.000 +2.000 -3.000 -9.000 +0.000 -2.000 +2.000 -8.000 +3.000 +2.000 +0.000 +7.000 +1.000 -2.000 -2.000 -7.000 +0.000 det_R(A) = +0.0000 Press return to continue Press X return to stop