View Compilation Error

0_0_4645860_41.cpp: In function `int main()':
0_0_4645860_41.cpp:5: error: expected primary-expression before '<' token
0_0_4645860_41.cpp:5: error: `a' undeclared (first use this function)
0_0_4645860_41.cpp:5: error: (Each undeclared identifier is reported only once for each function it appears in.)