网站制作类发票到哪里开代码优化

思维导图

练习题

1.提示并输入一个字符串，统计该字符中大写、小写字母个数、数字个数、空格个数以及其他字符个数

#include <iostream>
#include <string.h>
#include <array>
using namespace std;int main()
{string str;cout << "请输入字符串:";getline(cin,str);int i=0;int lower=0,upper=0,other=0,number=0,space=0;while(str[i]!='\0'){if(str[i]>='a' && str[i]<='z'){lower++;}else if(str[i]>='Z' && str[i]<='Z'){upper++;}else if(str[i]>='0' && str[i]<='9'){number++;}else if(str[i]==' '){space++;}else{other++;}i++;}cout << "小写字母：" << lower << endl;cout << "大写字母：" << upper << endl;cout << "数字：" << number << endl;cout << "空格：" << space << endl;cout << "其他字符：" << other << endl;return 0;
}