View Compilation Error

0_0_8052637_27662.cpp: In function `void update(int, int, int, int, int, int)':
0_0_8052637_27662.cpp:46: error: `val' undeclared (first use this function)
0_0_8052637_27662.cpp:46: error: (Each undeclared identifier is reported only once for each function it appears in.)