摘要：
1.#includeusing namespace std;int main(){ coutint main(){int k;char x;cout>k;vector a(k),b(k),c(k);cout>a;cout>b;L:cout>x;switch(x){case '+':c=a+b;break;case '-':c=a-b;break;case '*':c=a*b;break;case 'q':goto Z;default:cout>(istream &input,vector&am 阅读全文
