View Compilation Error

0_0_26358425_3454.cpp: In function 'int fab(int)':
0_0_26358425_3454.cpp:11:1: error: a function-definition is not allowed here before '{' token
 {
 ^
0_0_26358425_3454.cpp:16:1: error: expected '}' at end of input
 }
 ^