View Compilation Error

0_0_30637032_23726.cpp:1:1: error: 'include' does not name a type
 include <stdio.h>
 ^
0_0_30637032_23726.cpp: In function 'int main()':
0_0_30637032_23726.cpp:70:40: error: 'scanf' was not declared in this scope
  while(scanf("%d%d%d%d", &n, &X, &Y, &Z) != EOF && (n||X||Y||Z)){
                                        ^
0_0_30637032_23726.cpp:70:45: error: 'EOF' was not declared in this scope
  while(scanf("%d%d%d%d", &n, &X, &Y, &Z) != EOF && (n||X||Y||Z)){
                                             ^
0_0_30637032_23726.cpp:86:41: error: 'printf' was not declared in this scope
   printf("%I64d\n", ZL_MST(n, n + 1, id));
                                         ^