src.cpp:6:26: warning: invalid suffix on literal; C++11 requires a space between literal and string macro [-Wliteral-suffix]
freopen("GTLNNN.OUT","w"stdout);
^
In file included from C:/Debug/compiler/gcc/lib/gcc/mingw32/4.9.2/include/c++/cstdio:42:0,
from C:/Debug/compiler/gcc/lib/gcc/mingw32/4.9.2/include/c++/mingw32/bits/stdc++.h:46,
from src.cpp:1:
src.cpp: In function 'int main()':
src.cpp:6:29: error: expression cannot be used as a function
freopen("GTLNNN.OUT","w"stdout);
^