运行 ID: 2445

Main.cc:3:11: error: ‘::main’ must return ‘int’
 void main()
           ^
Main.cc: In function ‘int main()’:
Main.cc:9:4: warning: init-statement in selection statements only available with -std=c++1z or -std=gnu++1z
 if(i%2==0{
    ^
Main.cc:9:10: error: expected ‘;’ before ‘{’ token
 if(i%2==0{
          ^
Main.cc:9:7: warning: statement has no effect [-Wunused-value]
 if(i%2==0{
    ~~~^~~
Main.cc:13:1: error: expected primary-expression before ‘else’
 else
 ^~~~
Main.cc:13:1: error: expected ‘)’ before ‘else’