Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:15:14: error: expected initializer before ‘sum’ long longint sum=0; ^ user.cpp:31:9: error: ‘sum’ was not declared in this scope sum+=myvector2[x]*myvector1[i];--x;} ^ user.cpp:32:34: error: ‘sum’ was not declared in this scope else if(myvector2[i]<0) {sum+=myvector1[y]*myvector2[i];--y;} ^ user.cpp:33:15: error: ‘sum’ was not declared in this scope else {sum+=myvector1[i]*myvector2[i];} ^ user.cpp:40:7: error: ‘sum’ was not declared in this scope fout<<sum; ^