摘要： https://blog.csdn.net/weixin_43400806/article/details/124229091 创建二维矩阵 #include <vector> int main() { int m; int n; cin >> m >> n; vector<vector<int>> 阅读全文

摘要： #include <iostream>#include <fstream>#include <string> using namespace std; int main() { //往文件里写 ofstream f; f.open("test.txt",ios::out); f << "aaaaaa 阅读全文