题解 | #统计字符串中各字母字符对应的个数#

#include <iostream>
// write your code here......
#include <map>

using namespace std;

int main(){

    char str[100] = { 0 };
    cin.getline(str, sizeof(str));

    // write your code here......
    map<char, int> my_map;
    
    int i = 0;
    while(str[i] != '\0'){
        if(isalpha(str[i]))
            my_map[str[i]]++;
        i++;   
    }

    
    for(map<char, int>::iterator itr = my_map.begin(); itr != my_map.end(); ++itr)
        cout << itr->first << ':' << itr->second << endl;

    return 0;
}