/in/HW7.cpp: In function 'int search(std::vector<int>, int)':
/in/HW7.cpp:9:19: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
for (int i=0;i<v.size();i++){
~^~~~~~~~~
/in/HW7.cpp: In member function 'void BOOK::list()':
/in/HW7.cpp:41:23: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
for (int i=0;i<ID.size();i++){
~^~~~~~~~~~
/in/HW7.cpp: In member function 'void CUSTOMER::list()':
/in/HW7.cpp:54:23: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
for (int i=0;i<ID.size();i++){
~^~~~~~~~~~
/in/HW7.cpp: In function 'int main()':
/in/HW7.cpp:108:27: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
for (int i=0;i<book.title.size();i++){
~^~~~~~~~~~~~~~~~~~
/in/HW7.cpp:124:27: error: comparison between signed and unsigned integer expressions [-Werror=sign-compare]
for (int i=0;i<book.ID.size();i++){
~^~~~~~~~~~~~~~~
cc1plus: all warnings being treated as errors