agenda.cpp: In function 'int main()': agenda.cpp:6: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result agenda.cpp:7: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result agenda.cpp:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result agenda.cpp:29: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result agenda.cpp:8: warning: 'cm1' may be used uninitialized in this function agenda.cpp:8: warning: 'cm2' may be used uninitialized in this function