festival.cpp: In function 'int main()': festival.cpp:52: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result festival.cpp:53: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result festival.cpp:54: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result festival.cpp:55: warning: ignoring return value of 'char* gets(char*)', declared with attribute warn_unused_result festival.cpp:58: warning: ignoring return value of 'char* gets(char*)', declared with attribute warn_unused_result /tmp/ccm68dNN.o: In function `main': festival.cpp:(.text+0x21a): warning: the `gets' function is dangerous and should not be used.