区别在于:svec[0]; // 没有边界检查 svec.at(0); // 执行边界检查，并引发 out_of_range 异常
vector<good> goods; //将商品信息写入good.txt void writeGood(string ID,string name,int originalNum,int outNum,int inNum,int finalNum){ char originalNumCh[10]; _itoa(originalNum, originalNumCh, 10); string originalNumStr(originalNumCh, originalNumCh+strlen(originalNumCh)); char outNumCh[...
#include <vector> #include <iostream> using std::vector; using std::cout; using std::cin; using std::endl; int main() { vector<unsigned> scores(11, 0); unsigned grade; while (cin >> grade) { if (grade <= 100) ++*(scores.begin() + grade / 10); } for (auto s : scores)...
00:06:58:979 1>C:\Qt_projects\multicolor_chess\src\app\bitchess.ixx(277,8): message : see reference to function template instantiation ‘void fsm::ToSizedVector<int>(T,std::vector<bool,std::allocator<bool>> &)’ being compiled
include <vector> include <list> include include <set> include <deque> include <stack> include <bitset> include <algorithm> include <functional> include <numeric> include <utility> include <sstream> include <iostream> include <iomanip> include <cstdio> include <cmath> include <cstd...
@@ -115,7 +115,7 @@ void Evaluation::readFile(const string& file, std::vector< pair<double,string> > ifstream iff(file.c_str()); if(!iff) { cout << "Can't read " << file << endl; std::cout << "Can't read " << file << std::endl; exit(1); } @@ -179,7 +179...
cout是输出流的内置对象，cout<<word<<" ";的意思是输出变量word的值，并再输出一个空格 i++;的意思是i=i+1;{}大括号扩起来的意思是，这是while(in>>word)的循环体中的内容
will print:ic| test.cpp:34 in "void my_function(int, double)" If called with arguments it will print the prefix, those arguments names, and its values. The code:auto v0 = std::vector<int>{1, 2, 3}; auto s0 = std::string{"bla"}; IC(v0, s0, 3.14);will print:...
vector<int> v(10); 为构造函数提供哦你一个整数参数时,向量会初始化成相应数据类型的零值。如果向量的基类型是一个类,就会用那个类的默认构造函数来进行初始化。 向量的长度和容量: 向量的长度是向量中元素的个数,容量则是当前实际分配了内存的元素个数。
求解cin.clear()用法#include<iostream> #include<vector> usingnamespacestd; voidmain() { intm; vector<int>vec1,vec2; cout<<"entersomedatatovec1:(Ctrl+Ztoend)"<<endl; while(cin>>m) { vec1.push_back(m); } cin.clear