View Compilation Error

0_0_23349722_22385.cpp: In function 'int main()':
0_0_23349722_22385.cpp:4:34: error: 'scanf' was not declared in this scope
         while(1 == scanf("%d", &n))  
                                  ^
0_0_23349722_22385.cpp:12:43: error: 'pow' was not declared in this scope
                         if ((int)(pow(x, 3) + pow(y, 3)) > n)  
                                           ^
0_0_23349722_22385.cpp:22:55: error: 'printf' was not declared in this scope
                                 printf("%d %d\n", x, y);  
                                                       ^
0_0_23349722_22385.cpp:28:46: error: 'printf' was not declared in this scope
                         printf("impossible\n");  
                                              ^