统计字符 + 字符串计算

#include<bits/stdc++.h>
using namespace std;
int main(){
    char str[114514];
    gets(str);
    int letters=0,digits=0,others=0;
    for(int i=0;i<strlen(str)-1;i++){
        if(str[i]>='a' and str[i]<='z'){
            letters++;
        }
        else if(str[i]>='0' and str[i]<='9'){
            digits++;
        }
        else{
            others++;
        }
    }
    cout<<"Letters="<<letters;
    cout<<endl<<"Digits="<<digits;
    cout<<endl<<"Others="<<others;
    return 0;
}