Compilare: user.cpp: In function 'int add(long int, long int, long int, long int)': user.cpp:22: warning: no return statement in function returning non-void user.cpp: In function 'int main()': user.cpp:28: warning: format '%d' expects type 'int*', but argument 2 has type 'long int*' user.cpp:28: warning: format '%d' expects type 'int*', but argument 3 has type 'long int*' user.cpp:30: warning: format '%d' expects type 'int*', but argument 2 has type 'long int*' user.cpp:33: warning: format '%d' expects type 'int*', but argument 2 has type 'long int*' user.cpp:33: warning: format '%d' expects type 'int*', but argument 3 has type 'long int*' user.cpp:63: 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:22: warning: control reaches end of non-void function