In file included from /in/driver/driver.cpp:1:0:
/in/ex2.h: In function 'int frequency(User, std::__cxx11::string)':
/in/ex2.h:53:56: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
while (user.blog_list->titles[a].find(word, i) != -1){
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
/in/ex2.h:60:58: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
while (user.blog_list->contents[a].find(word, i) != -1){
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~