提示并輸入一個(gè)字符串，統(tǒng)計(jì)該字符串中字母、數(shù)字、空格、其他字符的個(gè)數(shù)并輸出

代碼展示

#include <iostream>using namespace std;int main() {string str;int countc = 0; // 字母計(jì)數(shù)int countn = 0; // 數(shù)字計(jì)數(shù)int count = 0;  // 空格計(jì)數(shù)int counto = 0; // 其他字符計(jì)數(shù)cout << "請(qǐng)輸出一個(gè)字符串:" << endl;getline(cin, str);int len = str.size();for (int i = 0; i < len; i++) {if ((str[i] >= 'A' && str[i] <= 'Z') || (str[i] >= 'a' && str[i] <= 'z')) {countc++;} else if (str[i] >= '0' && str[i] <= '9') { countn++;} else if (str[i] == ' ') {count++;} else {counto++;}}cout << "字母：" << countc << endl;cout << "數(shù)字：" << countn << endl;cout << "空格：" << count << endl;cout << "其他字符：" << counto << endl;return 0;
}

運(yùn)行結(jié)果

思維導(dǎo)圖