题解 | #计算某字母出现次数#

#include<iostream>
#include<string>
using namespace std;
int main()
{
    string str;
    char s;
    int count=0;
    getline(cin,str);
    cin>>s;
    for(int i=0;i<str.length();i++)
    {
        if(str[i] == s){
            count++;
        }else if(str[i]-32 == s)
        {
            count++;
        }else if(str[i]+32 == s){
            count++;
        }
    }
    cout<<count<<endl;
    return 0;
}