View Compilation Error

0_0_4683606_811.cpp: In function `int Bin(int)':
0_0_4683606_811.cpp:96: error: `sz' undeclared (first use this function)
0_0_4683606_811.cpp:96: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_4683606_811.cpp: In function `int main()':
0_0_4683606_811.cpp:148: error: `sz' undeclared (first use this function)