View Compilation Error

0_0_25766154_9537.cpp: In function 'void sub(int&, int)':
0_0_25766154_9537.cpp:26:1: error: a function-definition is not allowed here before '{' token
 {
 ^
0_0_25766154_9537.cpp:105:1: error: expected '}' at end of input
 }
 ^