View Compilation Error

843290_0_0_24022.cpp:3: error: `main' must return `int'
843290_0_0_24022.cpp: In function `int main(...)':
843290_0_0_24022.cpp:18: error: name lookup of `n' changed for new ISO `for' scoping
843290_0_0_24022.cpp:7: error:   using obsolete binding at `n'
843290_0_0_24022.cpp:30: error: name lookup of `x' changed for new ISO `for' scoping
843290_0_0_24022.cpp:23: error:   using obsolete binding at `x'
843290_0_0_24022.cpp:35: error: name lookup of `y' changed for new ISO `for' scoping
843290_0_0_24022.cpp:31: error:   using obsolete binding at `y'