Compilare: user.cpp: In function 'int main()': user.cpp:31: warning: format '%d' expects type 'int*', but argument 2 has type 'char*' user.cpp:31: warning: format '%d' expects type 'int*', but argument 3 has type 'char*' user.cpp:27: warning: 'a2' may be used uninitialized in this function user.cpp:27: warning: 'a1' may be used uninitialized in this function /tmp/cc4PlRBs.o: In function `main': user.cpp:(.text+0x13e): warning: the `gets' function is dangerous and should not be used.