题解 | #计算某字符出现次数#

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

using namespace std;

int main() 
{

    string s;
    getline(cin,s);
    char target;
    cin >> target;
    unsigned cnt = 0;
    for (char &ch: s )
        if(tolower(ch) == tolower(target))
           ++cnt;
    cout<<cnt <<endl;
    return 0;
}
// 64 位输出请用 printf("%lld")