clase.cpp: In function 'int print(std::string)': clase.cpp:18: warning: comparison between signed and unsigned integer expressions clase.cpp:20: warning: no return statement in function returning non-void clase.cpp: In function 'int main()': clase.cpp:23: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result clase.cpp:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result