View Compilation Error

0_0_7963694_19640.cpp: In function `int bserach_R(int)':
0_0_7963694_19640.cpp:168: error: `ind' undeclared (first use this function)
0_0_7963694_19640.cpp:168: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_7963694_19640.cpp:171: error: `x' undeclared (first use this function)
0_0_7963694_19640.cpp: In function `int bserach_L(int)':
0_0_7963694_19640.cpp:180: error: `ind' undeclared (first use this function)
0_0_7963694_19640.cpp:183: error: `x' undeclared (first use this function)