Compilare: user.cpp: In function ‘int main()’: user.cpp:40:29: warning: format ‘%ld’ expects argument of type ‘long int*’, but argument 3 has type ‘int*’ [-Wformat=] fscanf(f,"%ld",&a[i]); ^ user.cpp: In function ‘int b(int)’: user.cpp:15:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int c(int)’: user.cpp:30:1: warning: control reaches end of non-void function [-Wreturn-type] } ^