题解 | #计算某字符出现次数#

#include <iostream>
using namespace std;

int main() {
    string str;
    char s;
    int count = 0;
    getline(cin, str);
    cin >> s;

    for (int i = 0; i < str.size(); i++)
    {
	  // 'Q' == '1' + 32
        if (s > 64)
        {
            if (str[i] == s || str[i] == s + 32 || str[i] == s - 32)
            {
                count++;
            }
        }
        else
        {
            if (str[i] == s)
            {
                count++;
            }
        }
    }
    
    cout << count << endl;
    return 0;
}
// 64 位输出请用 printf("%lld")