题解 | #计算某字符出现次数#

#include <iostream>
#include <string>
#include <cctype> // 包含字符处理函数tolower
using namespace std;
int main() {
    std::string inputString;
    char targetChar;
    getline(cin,inputString);
    cin>>targetChar;
    int c=0;
    char b =tolower(targetChar);
    for( char C : inputString){
       if(tolower(C)==b){
        c++;
       }
    }
    cout<<c<<endl;
    return 0;
}