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411 समाचार
Public archive edition · Attributed source reporting with original dates · AI drafts are excluded

411 REFERENCE · Wikibooks

Linear Algebra and the C Language/a0go

Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.

__NOTOC__ Install and compile this file in your working directory. /* ------------------------------------ */ /* Save as : c00a.c */ /* ------------------------------------ */ #include "v_a.h" /* ------------------------------------ */ void fun(int rc) { double **A = rsymmetric_mR(i_mR(rc,rc),9); double **B = rsymmetric_mR(i_mR(rc,rc),9); double **AplsB = i_mR(rc,rc); clrscrn(); printf(" A:"); p_mR(A, S4,P0,C6); printf(" B:"); p_mR(B, S4,P0,C6); printf(" A + B:"); p_mR(add_mR(A,B,AplsB), S4,P0,C6); f_mR(A); f_mR(B); f_mR(AplsB); } /* ------------------------------------ */ int main(void) { time_t t; srand(time(&t)); do fun(rp_I(RC3)+RC1); while(stop_w()); return 0; } /* ------------------------------------ */ /* ------------------------------------ */ The sum of two symmetric matrices is symmetric. Screen output example: A: -4 +9 +4 -6 +9 +6 -6 -1 +4 -6 +8 +8 -6 -1 +8 +6 B: +7 -6 +6 -9 -6 -8 -1 +7 +6 -1 -4 +6 -9 +7 +6 +6 A + B: +3 +3 +10 -15 +3 -2 -7 +6 +10 -7 +4 +14 -15 +6 +14 +12 Press return to continue Press X return to stop