Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:6:5: error: ‘__int64’ was not declared in this scope __int64 a,s=0; ^ user.cpp:6:13: error: expected ‘;’ before ‘a’ __int64 a,s=0; ^ user.cpp:11:5: error: ‘a’ was not declared in this scope a=1<<k; ^ user.cpp:22:13: error: ‘s’ was not declared in this scope s+=1<<(k-1)*2; ^ user.cpp:28:13: error: ‘s’ was not declared in this scope s+=2*(1<<(k-1)*2); ^ user.cpp:34:13: error: ‘s’ was not declared in this scope s+=3*(1<<(k-1)*2); ^ user.cpp:39:17: error: ‘s’ was not declared in this scope printf("%d",s); ^