View Compilation Error

0_0_16394398_706.cpp: In function 'void fileio_in_out()':
0_0_16394398_706.cpp:69:18: error: a function-definition is not allowed here before '{' token
 void fileio_txt(){//freopen("input.txt","r",stdin);//freopen("output.txt","w",stdout);}
                  ^
0_0_16394398_706.cpp:181:1: error: expected '}' at end of input
 }
 ^