在 C++ 中将字符存储到字符串中

发布于 2024-10-18 05:59:45 字数 767 浏览 3 评论 0原文

所以现在我有这段代码，可以按照用户输入确定的设定增量生成随机字母。

#include <iostream>
#include <string>
#include <cstdlib>

using namespace std;

int sLength = 0;
static const char alphanum[] =
"0123456789"
"!@#$%^&*"
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz";

int stringLength = sizeof(alphanum) - 1;

char genRandom()
{
    return alphanum[rand() % stringLength];
}

int main()
{
    cout << "What is the length of the string you wish to match?" << endl;
    cin >> sLength;
    while(true)
    {
        for (int x = 0; x < sLength; x++)
        {
            cout << genRandom();
        }
        cout << endl;
    }

}

我正在寻找一种方法将第一个（用户定义的数量）字符存储到一个字符串中，我可以用它与另一个字符串进行比较。任何帮助将不胜感激。

原文

So right now I have this code that generates random letters in set increments determined by user input.

#include <iostream>
#include <string>
#include <cstdlib>

using namespace std;

int sLength = 0;
static const char alphanum[] =
"0123456789"
"!@#$%^&*"
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz";

int stringLength = sizeof(alphanum) - 1;

char genRandom()
{
    return alphanum[rand() % stringLength];
}

int main()
{
    cout << "What is the length of the string you wish to match?" << endl;
    cin >> sLength;
    while(true)
    {
        for (int x = 0; x < sLength; x++)
        {
            cout << genRandom();
        }
        cout << endl;
    }

}

I'm looking for a way to store the first (user defined amount) of chars into a string that I can use to compare against another string. Any help would be much appreciated.

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贱贱哒 2024-10-25 05:59:45

只需

string s(sLength, ' ');

在 while (true) 之前添加，在循环中更改

cout << genRandom();

为

s[x] = genRandom();

，然后删除 cout << endl; 语句。这将通过将字符放入 s 来替换所有打印。

Just add

string s(sLength, ' ');

before while (true), change

cout << genRandom();

s[x] = genRandom();

in your loop, and remove the cout << endl; statement. That will replace all of the printing by putting the characters into s.

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ˇ宁静的妩媚 2024-10-25 05:59:45

嗯，这个怎么样？

    std::string s;
    for (int x = 0; x < sLength; x++)
    {
        s.push_back(genRandom());
    }

Well, how about this?

    std::string s;
    for (int x = 0; x < sLength; x++)
    {
        s.push_back(genRandom());
    }

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離人涙 2024-10-25 05:59:45

#include<algorithm>
#include<string>
// ...

int main()
{
    srand(time(0));  // forget me not
    while(true) {
        cout << "What is the length of the string you wish to match?" << endl;
        cin >> sLength;
        string r(sLength, ' ');
        generate(r.begin(), r.end(), genRandom);
        cout << r << endl;
    }

}

#include<algorithm>
#include<string>
// ...

int main()
{
    srand(time(0));  // forget me not
    while(true) {
        cout << "What is the length of the string you wish to match?" << endl;
        cin >> sLength;
        string r(sLength, ' ');
        generate(r.begin(), r.end(), genRandom);
        cout << r << endl;
    }

}

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~没有更多了~