题解 | #计算某字符出现次数#

#include <cctype>
#include <iostream>
#include <string>
using namespace std;

int main() {
    string str;
    getline(cin,str);
    char ch = tolower(getchar());
    int count = 0,i = 0;
    while (i < str.size()) {
        if (str[i] == ch) {
            count++;
        }
        else if(str[i] == ch-32){
            count++;
        }
        i++;

    }
    cout<<count<<endl;
}

// 64 位输出请用 printf("%lld")