运行 ID: 5011

Main.cc: In function ‘int main()’:
Main.cc:8:29: error: expected primary-expression before ‘;’ token
     int n=b*1000+c*100+d*10+;
                             ^
Main.cc:7:9: warning: unused variable ‘e’ [-Wunused-variable]
     int e=a/1000%10;
         ^