joc7.cpp: In function 'int main()': joc7.cpp:87: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result joc7.cpp:88: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result joc7.cpp:89: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result joc7.cpp:92: warning: ignoring return value of 'char* gets(char*)', declared with attribute warn_unused_result /tmp/ccy6BTTH.o: In function `main': joc7.cpp:(.text+0x2f8): warning: the `gets' function is dangerous and should not be used.