src.cpp:1:1: error: expected unqualified-id before numeric constant
500 seconds= 0 hours: 8 minutes: 20 seconds
^
src.cpp:3:1: error: 'var' does not name a type
var input = Console.ReadLine();
^
src.cpp:4:12: error: 'Convert' was not declared in this scope
int time = Convert.ToInt32(input);
^
src.cpp:4:28: error: 'input' was not declared in this scope
int time = Convert.ToInt32(input);
^
src.cpp:8:1: error: 'Console' does not name a type
Console.Write("seconds：{0}", time);
^
src.cpp:9:1: error: 'Console' does not name a type
Console.Write("hours：{0}", hour);
^
src.cpp:10:1: error: expected unqualified-id before 'if'
if (minute > 0)
^
src.cpp:12:1: error: expected unqualified-id before 'if'
if (second > 0)
^
src.cpp:14:1: error: 'Console' does not name a type
Console.ReadKey();
^