View Compilation Error

0_0_24033184_22751.cpp: In function 'int main()':
0_0_24033184_22751.cpp:11:23: error: 'scanf' was not declared in this scope
  while (scanf("%d", &n) != EOF)
                       ^
0_0_24033184_22751.cpp:11:28: error: 'EOF' was not declared in this scope
  while (scanf("%d", &n) != EOF)
                            ^
0_0_24033184_22751.cpp:14:16: error: 'printf' was not declared in this scope
    printf("yes");
                ^
0_0_24033184_22751.cpp:16:15: error: 'printf' was not declared in this scope
    printf("no");
               ^