View Compilation Error

0_0_6028128_17839.cpp: In function `int main()':
0_0_6028128_17839.cpp:299: error: `w' undeclared (first use this function)
0_0_6028128_17839.cpp:299: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6028128_17839.cpp:299: error: `n' undeclared (first use this function)