View Compilation Error

905657_0_0_7774.cpp: In function `int main()':
905657_0_0_7774.cpp:8: error: `T' undeclared (first use this function)
905657_0_0_7774.cpp:8: error: (Each undeclared identifier is reported only once for each function it appears in.)
905657_0_0_7774.cpp:11: error: `n' undeclared (first use this function)