int mode = 6; //注意 > 前面的空格不要少 vector> ivec(mode); //6行,在后面循环插入的时候定义列 //插入值 for (int i2 = 0; i2 < ivec.size(); i2++) { //行 for (int i = 0; i <= 3; i++) { //列 ivec[i2].push_back(99); } } //遍历输出值 for (int i = 0; i < mode; i++) { cout << endl<<"行: " << i << ": "; for (vector ::const_iterator p = ivec[i].begin(); p != ivec[i].end(); p++) { cout << *p<<" "; } }



