411 REFERENCE · Wikibooks
Linear Algebra and the C Language/a055
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__NOTOC__
Install and compile this file in your working directory.
/* ------------------------------------ */
/* Save as : swapc.c */
/* ------------------------------------ */
#include "v_a.h"
/* ------------------------------------ */
int main(void)
{
double a[R3*C3] ={ 1, 2, 3,
1, 2, 3,
1, 2, 3};
double **A = ca_A_mR(a,i_mR(R3,C3));
int c1 = C1;
int c2 = C3;
clrscrn();
printf(" A :");
p_mR(A,S5,P0,C6);
printf(" swapC_mR(A, C%d, C%d)\n\n",c1,c2);
printf(" A :");
p_mR(swapC_mR(A,c1,c2),S5,P0,C6);
f_mR(A);
stop();
return 0;
}
/* ------------------------------------ */
/* ------------------------------------ */
Swaps two columns:
Screen output example:
A :
+1 +2 +3
+1 +2 +3
+1 +2 +3
swapC_mR(A, C1, C3)
A :
+3 +2 +1
+3 +2 +1
+3 +2 +1
Press return to continue.