trenuri1.cpp: In function 'int main()': trenuri1.cpp:78: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result trenuri1.cpp:79: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result trenuri1.cpp:80: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result trenuri1.cpp:82: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result trenuri1.cpp:98: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result