Compilare: user.cpp: In function ‘void citeste()’: user.cpp:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:18: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result user.cpp: In function ‘void scrie()’: user.cpp:60: warning: format ‘%d’ expects type ‘int’, but argument 2 has type ‘long long int’ user.cpp: In function ‘int main()’: user.cpp:66: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:67: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result /tmp/ccgVXx8B.o: In function `citeste()': user.cpp:(.text+0x262): warning: the `gets' function is dangerous and should not be used.