View Compilation Error

0_0_26479770_25502.cpp: In function 'void build(int, int, int)':
0_0_26479770_25502.cpp:42:13: error: expected primary-expression before '%' token
     int m = %
             ^
0_0_26479770_25502.cpp:42:13: error: expected primary-expression at end of input
0_0_26479770_25502.cpp:42:13: error: expected ',' or ';' at end of input
0_0_26479770_25502.cpp:42:13: error: expected '}' at end of input