johnie.cpp: In function 'int main()': johnie.cpp:65: warning: comparison between signed and unsigned integer expressions johnie.cpp:12: warning: unused variable 'poz' johnie.cpp:12: warning: unused variable 'maxim' johnie.cpp:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result johnie.cpp:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result johnie.cpp:11: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result johnie.cpp:15: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result