View Compilation Error

0_0_19183953_20057.cpp:1:1: error: 'include' does not name a type
 include<iostream>
 ^
0_0_19183953_20057.cpp: In function 'int main()':
0_0_19183953_20057.cpp:37:34: error: 'scanf' was not declared in this scope
     while(scanf("%d%d%d",&n,&m,&k)>0&&(n+m+k))
                                  ^
0_0_19183953_20057.cpp:42:21: error: 'getchar' was not declared in this scope
             getchar();
                     ^
0_0_19183953_20057.cpp:58:17: error: 'getchar' was not declared in this scope
         getchar();
                 ^
0_0_19183953_20057.cpp:59:35: error: 'memset' was not declared in this scope
         memset(vist,0,sizeof(vist));
                                   ^
0_0_19183953_20057.cpp:62:26: error: 'printf' was not declared in this scope
             printf("NO\n");
                          ^
0_0_19183953_20057.cpp:70:27: error: 'printf' was not declared in this scope
             printf("YES\n");
                           ^
0_0_19183953_20057.cpp:72:26: error: 'printf' was not declared in this scope
             printf("NO\n");
                          ^