chibrituri.cpp: In function 'int main()': chibrituri.cpp:6: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result chibrituri.cpp:7: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result chibrituri.cpp:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result chibrituri.cpp:8: warning: 'maxh1' may be used uninitialized in this function chibrituri.cpp:8: warning: 'maxh2' may be used uninitialized in this function chibrituri.cpp:8: warning: 'maxm1' may be used uninitialized in this function chibrituri.cpp:8: warning: 'maxm2' may be used uninitialized in this function chibrituri.cpp:8: warning: 'minm1' may be used uninitialized in this function chibrituri.cpp:8: warning: 'minm2' may be used uninitialized in this function chibrituri.cpp:8: warning: 'minh1' may be used uninitialized in this function chibrituri.cpp:8: warning: 'minh2' may be used uninitialized in this function