vot.cpp: In function 'int main()': vot.cpp:23: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result vot.cpp:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result vot.cpp:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result vot.cpp:31: warning: ignoring return value of 'char* gets(char*)', declared with attribute warn_unused_result /tmp/cc8nKrIH.o: In function `main': vot.cpp:(.text+0x3d8): warning: the `gets' function is dangerous and should not be used.