View Compilation Error

0_0_22350878_14183.cpp: In function 'int main()':
0_0_22350878_14183.cpp:5:15: error: 'scanf' was not declared in this scope
  scanf("%d",&n);
               ^
0_0_22350878_14183.cpp:25:18: error: 'printf' was not declared in this scope
   printf("%d\n",m);
                  ^