Eroare de compilare: main.cpp: In function 'int main()': main.cpp:7:5: error: 'cin' was not declared in this scope 7 | cin >> cer; | ^~~ main.cpp:2:1: note: 'std::cin' is defined in header '<iostream>'; did you forget to '#include <iostream>'? 1 | #include <fstream> +++ |+#include <iostream> 2 | using namespace std; main.cpp:8:9: warning: division by zero [-Wdiv-by-zero] 8 | cer /= 0; | ~~~~^~~~ Non zero exit status: 1