View Compilation Error

0_0_20799618_18550.cpp:2:11: error: '::main' must return 'int'
 void main()
           ^
0_0_20799618_18550.cpp: In function 'int main()':
0_0_20799618_18550.cpp:5:21: error: 'scanf' was not declared in this scope
  while(scanf("%d",&N)!=EOF)
                     ^
0_0_20799618_18550.cpp:5:24: error: 'EOF' was not declared in this scope
  while(scanf("%d",&N)!=EOF)
                        ^
0_0_20799618_18550.cpp:13:19: error: 'printf' was not declared in this scope
      printf(STRING);
                   ^
0_0_20799618_18550.cpp:15:16: error: 'printf' was not declared in this scope
     printf("\n");
                ^