View Compilation Error

0_0_34346260_6079.cpp: In function 'int main()':
0_0_34346260_6079.cpp:8:31: error: 'scanf' was not declared in this scope
  while(scanf("%c%c%c",&n,&m,&h)!=EOF){
                               ^
0_0_34346260_6079.cpp:8:34: error: 'EOF' was not declared in this scope
  while(scanf("%c%c%c",&n,&m,&h)!=EOF){
                                  ^
0_0_34346260_6079.cpp:11:29: error: 'printf' was not declared in this scope
    printf("%c %c %c\n",c,b,a);
                             ^
0_0_34346260_6079.cpp:14:29: error: 'printf' was not declared in this scope
    printf("%c %c %c\n",c,a,b);
                             ^
0_0_34346260_6079.cpp:17:29: error: 'printf' was not declared in this scope
    printf("%c %c %c\n",b,c,a);
                             ^
0_0_34346260_6079.cpp:20:29: error: 'printf' was not declared in this scope
    printf("%c %c %c\n",a,c,b);
                             ^
0_0_34346260_6079.cpp:23:29: error: 'printf' was not declared in this scope
    printf("%c %c %c\n",b,a,c);
                             ^
0_0_34346260_6079.cpp:26:29: error: 'printf' was not declared in this scope
    printf("%c %c %c\n",a,b,c);
                             ^