HJ2 计算某字符出现次数

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题目：HJ2 计算某字符出现次数

https://www.nowcoder.com/practice/a35ce98431874e3a820dbe4b2d0508b1

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思路：不区分大小写可以用toupper都转成大写

代码如下

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

int main() {
    string input;
    getline(cin, input);
    char c = toupper(getchar());
    int count = 0;
    for (int i = 0; i < input.size(); i++) {
        if (toupper(input[i]) == c) {
            count++;
        }
    }
    cout << count;
}

谢谢观看，祝顺利！