View Compilation Error

0_0_24474237_17295.cpp: In function 'vi qpow(vi, int)':
0_0_24474237_17295.cpp:26:10: error: a function-definition is not allowed here before '{' token
 vi next(){
          ^
0_0_24474237_17295.cpp:87:1: error: expected '}' at end of input
 }
 ^