Question

我有一个大问题...... 只需运行程序，然后转到“新枪”，然后转到“手枪”。当您必须输入模型时会出现问题。例如，如果我输入“Desert Eagle”，则在文本文件中仅输出“Eagle”。它奇怪，我无法解决它。

代码：

#include <fstream>
#include <iostream>
#include <windows.h>
#include <string>
#include <algorithm>
#include <sstream>
using namespace std;

void setcolor(unsigned short color)
{
HANDLE hcon = GetStdHandle(STD_OUTPUT_HANDLE);
SetConsoleTextAttribute(hcon,color);
}

int main (){

system("chcp 1251 > nul");
system("title GunnZone");


string gunModel;
int gunManufactureYear;
int itemNumber;
double gunWeight;
double price;

ofstream myfileHandguns("Handguns.txt", ios::app);
ofstream myfileRifles("Rifles.txt", ios::app);
ofstream myfileShotguns("Shotguns.txt", ios::app);
ofstream myfileSnipers("Snipers.txt", ios::app);
ofstream myfileGranades("Granades.txt", ios::app);
ofstream myfileExplosives("Explosives.txt", ios::app);


int choice;
cout << "1.New Gun" << endl;
cout << "2.List Guns" << endl;
cout << "3.Exit" << endl << endl;
cout << "Enter your choice: ";
cin >> choice;

if(choice == 1){

    system("cls");

    int gunTypeChoice;
    cout << "1.Handgun" << endl;
    cout << "2.Rifle" << endl;
    cout << "3.Shotgun" << endl;
    cout << "4.Sniper" << endl;
    cout << "5.Granade" << endl;
    cout << "6.Explosives" << endl << endl;
    cout << "Enter your choice: ";
    cin >> gunTypeChoice;

    if(gunTypeChoice == 1){

        system("cls");

        cout << "Model: ";
        cin >> gunModel;
        getline(cin, gunModel);
        cout << endl << endl;

        cout << "Year of Manufacture: ";
        cin >> gunManufactureYear;
        cout << endl << endl;

        cout << "Weight: ";
        cin >> gunWeight;
        cout << endl << endl;

        cout << "Item Number: ";
        cin >> itemNumber;
        cout << endl << endl;

        cout << "Price: ";
        cin >> price;


        myfileHandguns << "Model: " << gunModel << "\n\n";
        myfileHandguns << "Year of Manufacture: " << gunManufactureYear << "\n\n";
        myfileHandguns << "Weight: " << gunWeight << " g" << "\n\n";
        myfileHandguns << "Item Number: " << itemNumber << "\n\n";
        myfileHandguns << "Price: " << price << "$" << "\n\n";
        myfileHandguns.close();
    }

}

system("pause > nul");
return 0;

}

Answer 1

按照建议删除>>运算符。使用clear和ignore清除错误，跳过换行符\n

cout << "Model: ";
//cin >> gunModel;
std::cin.clear();
std::cin.ignore(0xffff, '\n');
std::getline(cin, gunModel);
cout << "Testing... you entered " << gunModel << endl;
cout << endl << endl;

另见Why would we call cin.clear() and cin.ignore() after reading input?

C ++从字符串中读取整行

1 个答案: