In file included from /in/driver/driver.cpp:1:0:
/in/ex2.h:23:13: error: variable or field 'log_in' declared void
 void log_in(testName, testPassword, user){
             ^~~~~~~~
/in/ex2.h:23:13: error: 'testName' was not declared in this scope
/in/ex2.h:23:13: note: suggested alternative: 'tempnam'
 void log_in(testName, testPassword, user){
             ^~~~~~~~
             tempnam
/in/ex2.h:23:23: error: 'testPassword' was not declared in this scope
 void log_in(testName, testPassword, user){
                       ^~~~~~~~~~~~
/in/ex2.h:23:37: error: 'user' was not declared in this scope
 void log_in(testName, testPassword, user){
                                     ^~~~
/in/ex2.h:23:37: note: suggested alternative: 'User'
 void log_in(testName, testPassword, user){
                                     ^~~~
                                     User
/in/ex2.h:42:15: error: variable or field 'add_blog' declared void
 void add_blog(title, content, user){
               ^~~~~
/in/ex2.h:42:15: error: 'title' was not declared in this scope
/in/ex2.h:42:15: note: suggested alternative: 'time'
 void add_blog(title, content, user){
               ^~~~~
               time
/in/ex2.h:42:22: error: 'content' was not declared in this scope
 void add_blog(title, content, user){
                      ^~~~~~~
/in/ex2.h:42:31: error: 'user' was not declared in this scope
 void add_blog(title, content, user){
                               ^~~~
/in/ex2.h:42:31: note: suggested alternative: 'User'
 void add_blog(title, content, user){
                               ^~~~
                               User
/in/ex2.h:51:15: error: 'user' was not declared in this scope
 int frequency(user, word){
               ^~~~
/in/ex2.h:51:15: note: suggested alternative: 'User'
 int frequency(user, word){
               ^~~~
               User
/in/ex2.h:51:21: error: 'word' was not declared in this scope
 int frequency(user, word){
                     ^~~~
/in/ex2.h:51:21: note: suggested alternative: 'void'
 int frequency(user, word){
                     ^~~~
                     void
/in/ex2.h:51:25: error: expression list treated as compound expression in initializer [-fpermissive]
 int frequency(user, word){
                         ^
/in/driver/driver.cpp: In function 'int main(int, char**)':
/in/driver/driver.cpp:69:5: error: 'log_in' was not declared in this scope
     log_in(testName, testPassword, user);
     ^~~~~~
/in/driver/driver.cpp:69:5: note: suggested alternative: 'blog_list'
     log_in(testName, testPassword, user);
     ^~~~~~
     blog_list
/in/driver/driver.cpp:83:5: error: 'add_blog' was not declared in this scope
     add_blog(title, content, user);
     ^~~~~~~~
/in/driver/driver.cpp:83:5: note: suggested alternative: 'my_add_blog'
     add_blog(title, content, user);
     ^~~~~~~~
     my_add_blog
/in/driver/driver.cpp:96:29: error: 'frequency' cannot be used as a function
     if (frequency(user, word) == my_frequency(user, word))
                             ^