View Compilation Error

0_0_29761709_10468.cpp: In function 'int main()':
0_0_29761709_10468.cpp:4:19: error: 'scanf' was not declared in this scope
     scanf("%d", &n);
                   ^
0_0_29761709_10468.cpp:11:38: error: 'printf' was not declared in this scope
             printf("Case %d: No\n", j);
                                      ^
0_0_29761709_10468.cpp:15:39: error: 'printf' was not declared in this scope
             printf("Case %d: Yes\n", j);
                                       ^