View Compilation Error

0_0_11805029_6.cpp:4: error: `main' must return `int'
0_0_11805029_6.cpp: In function `int main(...)':
0_0_11805029_6.cpp:5: error: expected primary-expression before "double"
0_0_11805029_6.cpp:5: error: expected `;' before "double"
0_0_11805029_6.cpp:5: error: expected `}' at end of input