Catch-up Method for Solving Equations

//  Catch-up method for solving the equation group pursue. cpp # Include <iostream> # Include <Vector> # Include <Algorithm> Using   Namespace  STD;  Class  Solutionequations {  Private  : Vector < Double > A; vector < Double > B; vector < Double > C; vector < Double > F; vector < Double > X;  Public  :  Void Setabcf (vector < Double > In_a, vector < Double > In_ B, vector < Double > In_c, vector < Double > In_f) { = In_a; B = In_ B; c = In_c; f = In_f ;}  //  Catch-up Method for Solving Equations Vector < Double > & Pursue () {Vector < Double > Bita; vector <Double > Y;  Int N = F. Size (); bita. push_back (C. (  0 )/B. ( 0  ); Y. push_back (F. (  0 )/B. ( 0  ));  For ( Int I = 1 ; I <n- 1 ; I ++){  Double Alpha = B. at (I)-A. at (I) * bita. At (I- 1  );  Double TMP = C. at (I )/ Alpha; bita. push_back (TMP); TMP = (F. at (I)-A. at (I) * Y. At (I- 1 ))/ Alpha; Y. push_back (TMP );}  Double Alpha = B. At (n- 1 )-A. At (n- 1 ) * Bita. At (n- 2 );  Double TMP = (F. At (n- 1 )-A. At (n- 1 ) * Y. At (n- 2 ))/ Alpha; Y. push_back (TMP); X. push_back (Y. At (n - 1  ));  For ( Int I = N- 2 , K = 0 ; I> = 0 ; I --, K ++){  Double TMP = Y. at (I)-bita. at (I )* X. At (k); X. push_back (TMP);} reverse (X. Begin (), X. End ());  Return  X ;}};  Int  Main () {solutionequations solution; vector < Double > A; vector < Double > B; vector < Double >C; vector < Double > F; A. push_back (  0  ); A. push_back ( - 1  ); A. push_back ( - 2  ); A. push_back ( - 3  ); B. push_back (  2  ); B. push_back (  3 ); B. push_back (  4  ); B. push_back (  5  ); C. push_back ( - 1  ); C. push_back ( - 2  ); C. push_back ( - 3  ); F. push_back (  6  ); F. push_back (  1  ); F. push_back ( -2  ); F. push_back (  1  ); Solution. setabcf (A, B, C, F); vector < Double > X = Solution. Pursue ();  For ( Int I = 0 ; I <X. Size (); I ++ ) {Cout < "  X =  " <X. at (I) <Endl ;}}