View Compilation Error

0_0_24620012_10184.cpp: In function 'int main()':
0_0_24620012_10184.cpp:5:15: error: 'scanf' was not declared in this scope
  scanf("%d",&m);
               ^
0_0_24620012_10184.cpp:15:25: error: 'printf' was not declared in this scope
   if(mark) printf("NO\n");
                         ^
0_0_24620012_10184.cpp:16:23: error: 'printf' was not declared in this scope
    else printf("YES\n");
                       ^