运行 ID: 71289

Main.cc: In function ‘int main()’:
Main.cc:7:18: error: expected ‘;’ before ‘<=’ token
     for(int i=1,i<=a,i=i+1){
                  ^~
Main.cc:7:18: error: expected primary-expression before ‘<=’ token
Main.cc:7:27: error: expected ‘;’ before ‘)’ token
     for(int i=1,i<=a,i=i+1){
                           ^
Main.cc:8:11: warning: statement has no effect [-Wunused-value]
          j==i;
          ~^~~