View Compilation Error

217121_0_24618.cpp:3: error: `main' must return `int'
217121_0_24618.cpp: In function `int main(...)':
217121_0_24618.cpp:4: error: `T' undeclared (first use this function)
217121_0_24618.cpp:4: error: (Each undeclared identifier is reported only once for each function it appears in.)
217121_0_24618.cpp:4: error: a function call cannot appear in a constant-expression
217121_0_24618.cpp:4: error: case label `<expression error>' not within a switch statement
217121_0_24618.cpp:4: error: expected `:' before ';' token