aritm.cpp: In function 'void citire()': aritm.cpp:8: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result aritm.cpp:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result aritm.cpp:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result aritm.cpp:12: warning: ignoring return value of 'char* gets(char*)', declared with attribute warn_unused_result /tmp/ccbB56xB.o: In function `citire()': aritm.cpp:(.text+0x26b): warning: the `gets' function is dangerous and should not be used.