/in/p1.cpp: In function 'int judge(char, std::__cxx11::string, char*, int, char*)':
/in/p1.cpp:62:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if (loc == string::npos){
~~~~^~~~~~~~~
/in/p1.cpp:69:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
while(loc != string::npos){
~~~~^~~~~~~~~
/in/p1.cpp: In function 'int game_continue(std::__cxx11::string, char*, int)':
/in/p1.cpp:79:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 0; i < right_guess_char.size(); i=i+1){
~~^~~~~~~~~~~~~~~~~~~~~~~~~