providing mip solving support through scip

.gitignore

@@ -7,3 +7,4 @@ linear_program_test
 maintenance_problem_test
 .test
 .data/Maintenance_Problem/mp
+.data/.cache/*.lp

Linear_Programming/Linear_Program.cpp

@@ -36,6 +36,15 @@ size_t Linear_Program::direction_end(){
 
 std::vector<double>& Linear_Program::direction(){
   return this->_direction;
+void Linear_Program::solve(){
+  std::stringstream path;
+  path << "./.data/.cache/" << this << ".lp";
+  std::ofstream ofs(path.str());
+  ofs << "solving:\n" << *this << std::endl;
+
+  std::stringstream command;
+  command << "scip -c \"read " << path.str() << " optimize quit \"";
+  system(command.str().c_str());
 }
 
 void Linear_Program::operator=(Linear_Program& lp){

Linear_Programming/Linear_Program.h

@@ -24,6 +24,7 @@ public:
   size_t& direction_start();
   size_t direction_end();
   std::vector<double>& direction();
+  void solve();
 
   void operator=(Linear_Program& lp);
   void operator=(Linear_Program&& lp);