运行 ID: 4919

Main.cc: In function ‘int main()’:
Main.cc:4:6: error: ‘i’ was not declared in this scope
  for(i=2;i<=sqrt(n);i++) {
      ^
Main.cc:4:18: error: ‘n’ was not declared in this scope
  for(i=2;i<=sqrt(n);i++) {
                  ^
Main.cc:4:18: note: suggested alternative: ‘yn’
  for(i=2;i<=sqrt(n);i++) {
                  ^
                  yn