Borderou de evaluare (job #680486)

Eroare de compilare: main.cpp: In function 'int main()': main.cpp:9:5: error: 'cin' was not declared in this scope 9 | cin>>n; | ^~~ main.cpp:2:1: note: 'std::cin' is defined in header '<iostream>'; did you forget to '#include <iostream>'? 1 | #include <fstream> +++ |+#include <iostream> 2 | main.cpp:27:4: error: 'cout' was not declared in this scope 27 | cout<<s; | ^~~~ main.cpp:27:4: note: 'std::cout' is defined in header '<iostream>'; did you forget to '#include <iostream>'? main.cpp:8:11: warning: unused variable 'u' [-Wunused-variable] 8 | int n,u,s=0,s1=0,D=0; | ^ main.cpp:8:17: warning: unused variable 's1' [-Wunused-variable] 8 | int n,u,s=0,s1=0,D=0; | ^~ main.cpp:8:22: warning: unused variable 'D' [-Wunused-variable] 8 | int n,u,s=0,s1=0,D=0; | ^ main.cpp:10:9: warning: unused variable 'cn' [-Wunused-variable] 10 | int cn=n; | ^~