bloc.cpp: In function 'int main()': bloc.cpp:28: warning: unused variable 'max' bloc.cpp:28: warning: unused variable 'max1' bloc.cpp:28: warning: unused variable 'prim' bloc.cpp:28: warning: unused variable 'prim1' bloc.cpp:28: warning: unused variable 'ultim' bloc.cpp:26: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result bloc.cpp:27: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result bloc.cpp:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result bloc.cpp:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result