afise.cpp: In function 'int main()': afise.cpp:33: warning: suggest explicit braces to avoid ambiguous 'else' afise.cpp:19: warning: unused variable 'minx' afise.cpp:19: warning: unused variable 'maxx' afise.cpp:19: warning: unused variable 'miny' afise.cpp:19: warning: unused variable 'maxy' afise.cpp:17: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result afise.cpp:18: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result afise.cpp:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result afise.cpp:22: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result