运行 ID: 55233

Main.cc: In function ‘int main()’:
Main.cc:12:21: error: ‘pow’ was not declared in this scope
             a%=(int)pow(10,i2);
                     ^~~
Main.cc:12:21: note: suggested alternative: ‘putw’
             a%=(int)pow(10,i2);
                     ^~~
                     putw