View Compilation Error

0_0_4289001_10223.cpp: In function `int main()':
0_0_4289001_10223.cpp:82: error: `u' undeclared (first use this function)
0_0_4289001_10223.cpp:82: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_4289001_10223.cpp:82: error: `w' undeclared (first use this function)
0_0_4289001_10223.cpp:85: error: `v' undeclared (first use this function)
0_0_4289001_10223.cpp: At global scope:
0_0_4289001_10223.cpp:95: error: expected declaration before '}' token