题解 | #计算某字符出现次数#(输入输出+字符串)

解题思路

1.简单模拟即可;

代码

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

int main(){
    string s;
    getline(cin, s);
    char ch;
    cin >> ch;
    if('A' <= ch && ch <= 'Z') ch += 32; //将大写字母统一变为小写
    int cnt = 0;
    for(auto& c : s){
        if(c == ch || c + 32 == ch) cnt++;
    }
    cout << cnt;
    return 0;
}