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 rezolva()’: user.cpp:51: warning: operation on ‘w’ may be undefined user.cpp: In function ‘void scrie()’: user.cpp:62: warning: format ‘%d’ expects type ‘int’, but argument 2 has type ‘long long int’ user.cpp: In function ‘int main()’: user.cpp:68: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:69: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result /tmp/cclM45p4.o: In function `citeste()': user.cpp:(.text+0x232): warning: the `gets' function is dangerous and should not be used.