Compilare: user.cpp: In function ‘int main()’: user.cpp:23: warning: array subscript has type ‘char’ user.cpp:24: warning: array subscript has type ‘char’ user.cpp:25: warning: array subscript has type ‘char’ user.cpp:15: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result user.cpp:16: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, 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:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result user.cpp: In function ‘bool adun()’: user.cpp:58: warning: unused variable ‘ad’ user.cpp: In function ‘bool termen()’: user.cpp:92: warning: array subscript has type ‘char’ /tmp/ccZRHTmH.o: In function `main': user.cpp:(.text+0x2c5): warning: the `gets' function is dangerous and should not be used.