View Compilation Error

0_0_30079648_17453.cpp: In function 'int main()':
0_0_30079648_17453.cpp:4:21: error: 'scanf' was not declared in this scope
 while(~scanf("%d",&n))
                     ^
0_0_30079648_17453.cpp:8:13: error: 'printf' was not declared in this scope
 printf("0\n");
             ^
0_0_30079648_17453.cpp:12:13: error: 'printf' was not declared in this scope
 printf("1\n");
             ^
0_0_30079648_17453.cpp:15:13: error: 'printf' was not declared in this scope
 printf("2\n");
             ^
0_0_30079648_17453.cpp:17:13: error: 'printf' was not declared in this scope
 printf("6\n");
             ^
0_0_30079648_17453.cpp:20:14: error: 'printf' was not declared in this scope
 printf("24\n");
              ^
0_0_30079648_17453.cpp:22:15: error: 'printf' was not declared in this scope
 printf("120\n");
               ^
0_0_30079648_17453.cpp:24:15: error: 'printf' was not declared in this scope
 printf("720\n");
               ^