View Compilation Error

0_0_33769061_24944.cpp:1:1: error: 'include' does not name a type
 include"stdio.h"
 ^
0_0_33769061_24944.cpp: In function 'int main()':
0_0_33769061_24944.cpp:7:17: error: 'scanf' was not declared in this scope
  scanf("%d\n",&n);
                 ^
0_0_33769061_24944.cpp:11:9: error: 'gets' was not declared in this scope
   gets(s);
         ^
0_0_33769061_24944.cpp:19:24: error: 'printf' was not declared in this scope
   printf("%d\n",(m+1)/2);
                        ^