Compilare: user.cpp: In function 'int add(long int, long int, long int, long int)': user.cpp:23: warning: no return statement in function returning non-void user.cpp: In function 'int main()': user.cpp:29: warning: format '%d' expects type 'int*', but argument 2 has type 'long int*' user.cpp:29: warning: format '%d' expects type 'int*', but argument 3 has type 'long int*' user.cpp:31: warning: format '%d' expects type 'int*', but argument 2 has type 'long int*' user.cpp:34: warning: format '%d' expects type 'int*', but argument 2 has type 'long int*' user.cpp:34: warning: format '%d' expects type 'int*', but argument 3 has type 'long int*' user.cpp:64: warning: format '%d' expects type 'int', but argument 2 has type 'long int' user.cpp: In function 'int add(long int, long int, long int, long int)': user.cpp:23: warning: control reaches end of non-void function