Compilare: user.cpp:41:2: warning: no newline at end of file user.cpp: In function 'int main()': user.cpp:19: warning: array subscript has type 'char' user.cpp:25: warning: array subscript has type 'char' user.cpp:25: warning: array subscript has type 'char' user.cpp:26: warning: array subscript has type 'char' user.cpp:31: warning: array subscript has type 'char' user.cpp:32: warning: array subscript has type 'char' user.cpp:12: warning: 'c2' may be used uninitialized in this function user.cpp:12: warning: 'c1' may be used uninitialized in this function /tmp/ccMUvgAG.o: In function `main': user.cpp:(.text+0x9a): warning: the `gets' function is dangerous and should not be used.