View Compilation Error

0_0_14232939_28613.cpp: In function 'int main()':
0_0_14232939_28613.cpp:11:19: error: 'scanf' was not declared in this scope
     scanf("%d", &n);
                   ^
0_0_14232939_28613.cpp:14:32: error: 'printf' was not declared in this scope
         printf("%d\n", f(m - 1));
                                ^