作业0827

提示并输入一个字符串，统计该字符串中字母个数、数字个数、空格个数、其他字符的个数

#include <iostream>
#include <string>
#include <cctype>using namespace std;int main()
{string str;int digit_count = 0;// 数字计数int alpha_count = 0;// 字母计数int blank_count = 0;// 空格计数int other = 0;      // 其他字符计数cout << "请输入一个字符串: ";getline(cin, str);for(int i=0; i<(int)str.length(); i++){if(isalpha(str[i])){alpha_count++;}else if(isdigit(str[i])){digit_count++;}else if(str[i] == ' '){blank_count++;}else{other++;}}cout << "数字个数：" << digit_count << endl;cout << "字母个数：" << alpha_count << endl;cout << "空格个数：" << blank_count << endl;cout << "其他字符个数：" << other << endl;return 0;
}

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