View Compilation Error

0_0_12620332_3780.cpp: In function `int main()':
0_0_12620332_3780.cpp:9: error: expected primary-expression before "double"
0_0_12620332_3780.cpp:9: error: expected `;' before "double"
0_0_12620332_3780.cpp:10: error: `S' undeclared (first use this function)
0_0_12620332_3780.cpp:10: error: (Each undeclared identifier is reported only once for each function it appears in.)