View Compilation Error

0_0_6152794_17758.cpp: In function `int main()':
0_0_6152794_17758.cpp:13: error: expected unqualified-id before "double"
0_0_6152794_17758.cpp:13: error: expected `,' or `;' before "double"
0_0_6152794_17758.cpp:19: error: `grade' undeclared (first use this function)
0_0_6152794_17758.cpp:19: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6152794_17758.cpp:19: error: `score' undeclared (first use this function)
0_0_6152794_17758.cpp:20: error: `cnt1' undeclared (first use this function)
0_0_6152794_17758.cpp:21: error: `cnt2' undeclared (first use this function)