View Compilation Error

0_0_2639515_3341.cpp: In function `int main()':
0_0_2639515_3341.cpp:4: error: expected unqualified-id before "int"
0_0_2639515_3341.cpp:4: error: expected `,' or `;' before "int"
0_0_2639515_3341.cpp:6: error: `b' undeclared (first use this function)
0_0_2639515_3341.cpp:6: error: (Each undeclared identifier is reported only once for each function it appears in.)