C ++ STL中的iswalpha()函数
C++STL中的iswalpha()函数用于检查给定的宽字符是否为字母。
算法
Begin Initializes the strings. Call function iswalpha(str) to check whether it contains alphabet or not. If it contains alphabet, then value will be returned otherwise zero will be returned. End
范例程式码
#include <cwctype>
#include <iostream>
#include <cwchar>
#include <clocale>
using namespace std;
int main() {
setlocale(LC_ALL, "ab1234");
wchar_t s[] = L"a%$^^&)";
bool flag = 0;
for (int i=0; i<wcslen(s); i++) {
if (iswalpha(s[i])) {
flag = 1;
break;
}
}
if (flag)
wcout << s << L" contains alphabets";
else
wcout << s << L" doesn't contain alphabets";
return 0;
}输出结果
a%$^^&) contains alphabets