prepare (1/3): 
finished

make (2/3): 
g++ -g -Wall -O2 -o main.o -c main.cpp 
In file included from main.cpp:7:0:
order.h: In member function 'bool COMP::operator()(const string&, const string&) const':
order.h:44:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(i = 0;i < a.length();i++){
              ~~^~~~~~~~~~~~
order.h:51:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(i = 0;i < b.length();i++){
              ~~^~~~~~~~~~~~
main.cpp: In function 'int main(int, char**)':
main.cpp:227:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
      for(j = 0;j<market.size();j++){
                ~^~~~~~~~~~~~~~
main.cpp:231:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
      while(j<market.size()){     //have order for the equity?
            ~^~~~~~~~~~~~~~
main.cpp:351:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       for(i = 0;i<market.size();i++){
                 ~^~~~~~~~~~~~~~
main.cpp:360:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       for(i = 0;i<tempo.size();i++){
                 ~^~~~~~~~~~~~~
main.cpp:386:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(i = 0;i < market.size();i++){
             ~~^~~~~~~~~~~~~~~
main.cpp:415:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(i = 0; i<T3arg.size();i++){
              ~^~~~~~~~~~~~~
main.cpp: In function 'void printmark(std::vector<order>&)':
main.cpp:427:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(i = 0;i < orders.size();i++){
            ~~^~~~~~~~~~~~~~~
main.cpp: In function 'void printprice(std::vector<int>&)':
main.cpp:434:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(i = 0;i<p.size();i++){
            ~^~~~~~~~~
g++ -g -Wall -O2 -o main main.o
finished

clean (3/3): 
finished

all task finished, build successfully