Compilare: user.cpp: In function 'int main()': user.cpp:12: warning: format '%d' expects type 'int*', but argument 2 has type 'int' user.cpp:12: warning: format '%d' expects type 'int*', but argument 3 has type 'int' user.cpp: In function 'int cmmdc(int, int)': user.cpp:6: warning: control reaches end of non-void function user.cpp: In function 'int main()': user.cpp:12: warning: 'a' is used uninitialized in this function user.cpp:12: warning: 'b' is used uninitialized in this function