View Compilation Error

0_0_15041935_21374.cpp: In function 'int qua(int)':
0_0_15041935_21374.cpp:50:84: error: 'res' was not declared in this scope
 inline int qua (int x) {for (int res = 0; x; x -= lowbit (x)) res += aa[x]; return res;}
                                                                                    ^
0_0_15041935_21374.cpp: In function 'int qub(int)':
0_0_15041935_21374.cpp:51:84: error: 'res' was not declared in this scope
 inline int qub (int x) {for (int res = 0; x; x -= lowbit (x)) res += bb[x]; return res;}
                                                                                    ^