运行 ID: 26056

Main.cc: In function ‘int main()’:
Main.cc:15:19: error: ‘j’ was not declared in this scope
   for(int jc;i<=d;j++){
                   ^
Main.cc:15:19: note: suggested alternative: ‘jc’
   for(int jc;i<=d;j++){
                   ^
                   jc
Main.cc:15:11: warning: unused variable ‘jc’ [-Wunused-variable]
   for(int jc;i<=d;j++){
           ^~