View Compilation Error

0_0_8846916_10405.cpp: In function `int main()':
0_0_8846916_10405.cpp:19: error: expected init-declarator before "double"
0_0_8846916_10405.cpp:19: error: expected `,' or `;' before "double"
0_0_8846916_10405.cpp:27: error: `v' undeclared (first use this function)
0_0_8846916_10405.cpp:27: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_8846916_10405.cpp:27: error: `w' undeclared (first use this function)