题目描述

代码展示

//统计出其中英文字母、空格、数字和其他字符的个数
# include <iostream>
#include <cstdlib>

using namespace std;

int main() {
    freopen("letter.in", "r", stdin);
    freopen("letter.out", "w", stdout);
    char c;
    int letter = 0, space = 0, digit = 0, other = 0;
    while ((c = getchar()) != '\n') {
        if (c >= 'a' && c <= 'z' || c >= 'A' && c <= 'Z')
            letter++;
        else if (c == ' ')
            space++;
        else if (c >= '0' && c <= '9')
            digit++;
        else
            other++;
    }
    cout << letter << endl;
    cout << space << endl;
    cout << digit << endl;
    cout << other << endl;
    return 0;
}