程序不会增加计数变量

Question

#include <stdafx.h>
#include <string> 
#include <iostream>

  

打印出＆＃34;零＆＃34;对于计数，即使我在字符串中达到所需字符时特别增加计数。

using namespace std;

int main()
{
    string userString = "I would like you to stop your chatting right now!";
    char userChar = 'o';

    int count = 0;

    int i = 0;

    for (i = 0; i < userString.length(); i++);
    {
        if (userString[i] == userChar)
        {
            count = count + 1;
        }
    }

    cout << "There are a total of " << count << " " << userChar << "'s." << endl;

    int rnd; cin >> rnd;
    return 11;
}

Answer 1

删除;在for (i = 0; i < userString.length(); i++);

的末尾

你永远不会遍历你的代码

Answer 2

这是正确的代码。您在for循环结束时添加了分号

#include <string>
#include <iostream>

using namespace std;

int main()
{
    string userString = "I would like you to stop your chatting right now!";
    char userChar = 'o';

    int count = 0;

    int i = 0;

    for (i = 0; i < userString.length(); i++)
    {
        cout <<userString.length();

        if (userString[i] == userChar)
        {
            count = count + 1;
        }
    }

    cout << "There are a total of " << count << " " << userChar << "'s." << endl;

    int rnd; cin >> rnd;
    return 11;
}