rowords.cpp: In function 'void solve()':
rowords.cpp:23:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
23 | for(int i = 1; i < s.size(); i++){
| ~~^~~~~~~~~~
rowords.cpp:24:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
24 | for(int j = 1; j < t.size(); j++){
| ~~^~~~~~~~~~
rowords.cpp: In function 'int main()':
rowords.cpp:4:48: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
4 | #define file(s) if (fopen(s".in", "r")) freopen(s".in", "r", stdin), freopen(s".out", "w", stdout)
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~
rowords.cpp:35:2: note: in expansion of macro 'file'
35 | file("rowords");
| ^~~~
rowords.cpp:4:77: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
4 | #define file(s) if (fopen(s".in", "r")) freopen(s".in", "r", stdin), freopen(s".out", "w", stdout)
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
rowords.cpp:35:2: note: in expansion of macro 'file'
35 | file("rowords");
| ^~~~