c++ - C++中的字符计数

Question

不确定为什么我的循环不起作用，每次我尝试输入时它都会卡住:/我希望输入能够显示我列出的不同类型的数量。

#include <iostream>
#include <string>
#include <iomanip>
#include <cctype>

using namespace std;
int main() {
char ch;
int puncCount = 0;
int letterCount = 0;
int digitCount = 0;
int spaceCount = 0;

cout << "The characters which you'd like!" << endl;
cout << "Type a line with a single 'Q' to stop \n" << endl;
cin.get(ch);

while (ch != 'q')
{

    letterCount += isalpha(ch);
    puncCount += ispunct(ch);
    digitCount += isalnum(ch);
    spaceCount += isspace(ch);

}

cout << "Letter count is"  << letterCount << endl;
cout << "Puncuation count is" << puncCount << endl;
cout << "Digit count is" << digitCount << endl;
cout << "Space count is" << spaceCount << endl;
return 0;
}

Answer 1

您需要再次调用以在循环中获取输入:

while (ch != 'q')
{
    // ...
    cin.get(ch);
}