c++函数中调用vc++_C ++中的iswlower（）函数

柔情只为你懂 2023-03-05 10:57 22阅读 0赞

c++函数中调用vc++

The **iswlower() function** is defined in the header file <cwctype.h>.

**iswlower()函数**在头文件<cwctype.h>中定义。

**Prototype:**

**原型：**

int iswlower(wchar_t rs);

**Parameter:**

**参数：**

wchar\_t rs – Checks the given character is in lower case or not.

wchar\_t rs –检查给定字符是否小写。

**Return type:**

**返回类型：**

The function returns two values:

该函数返回两个值：

1.  Zero: if rs is non - lowercase character.
    
    零：如果rs为非小写字符。
2.  Non Zero: if rs is lowercase character.
    
    非零：如果rs是小写字符。

**Use of function**

**使用功能**

The iswlower() is built- in function in C++, which is used to check the given character, rs is in lower case or not .

iswlower()是C ++中的内置函数，用于检查给定字符，而rs是否为小写。

**Program 1:**

**程序1：**

#include <cwctype> 
    #include <iostream> 
    using namespace std; 
    
    int main() {
           
    	wchar_t rs1 = 'H'; 
    	wchar_t rs2 = 'e'; 
    	wchar_t rs3 = 'l';
    	wchar_t rs4 = 'P';
    
    	// Function to check if the character 
    	// is a lowercase character or not 
    	if (iswlower(rs1)) 
    		wcout << rs1 << " is a lowercase "; 
    	else
    		wcout << rs1 << " is not a lowercase "; 
    	wcout << endl; 
    
    	if (iswlower(rs2)) 
    		wcout << rs2 << " is a lowercase "; 
    	else
    		wcout << rs2 << " is not a lowercase "; 
    	wcout << endl; 
    	
    	if (iswlower(rs3)) 
    		wcout << rs3 << " is a lowercase "; 
    	else
    		wcout << rs3 << " is not a lowercase  "; 
    	wcout << endl; 
    	
    	if (iswlower(rs4)) 
    		wcout << rs4 << " is a lowercase  "; 
    	else
    		wcout << rs4 << " is not a lowercase  "; 
    	wcout << endl; 
    
    	return 0; 
    }

**Output**

**输出量**

H is not a lowercase 
    e is a lowercase 
    l is a lowercase 
    P is not a lowercase

**Program 2:**

**程式2：**

#include <cwctype> 
    #include <iostream> 
    using namespace std; 
    
    int main() {
           
    	wchar_t rs1 = '.'; 
    	wchar_t rs2 = 'c'; 
    	wchar_t rs3 = '?';
    	wchar_t rs4 = 'm';
    
    	// Function to check if the character 
    	// is a lowercase character or not 
    	if (iswlower(rs1)) 
    		wcout << rs1 << " is a lowercase "; 
    	else
    		wcout << rs1 << " is not a lowercase "; 
    	wcout << endl; 
    
    	if (iswlower(rs2)) 
    		wcout << rs2 << " is a lowercase "; 
    	else
    		wcout << rs2 << " is not a lowercase "; 
    	wcout << endl; 
    	
    	if (iswlower(rs3)) 
    		wcout << rs3 << " is a lowercase "; 
    	else
    		wcout << rs3 << " is not a lowercase  "; 
    	wcout << endl; 
    	
    	if (iswlower(rs4)) 
    		wcout << rs4 << " is a lowercase  "; 
    	else
    		wcout << rs4 << " is not a lowercase  "; 
    	wcout << endl; 
    
    	return 0; 
    }

**Output**

**输出量**

. is not a lowercase 
    c is a lowercase 
    ? is not a lowercase  
    m is a lowercase

> 翻译自: [https://www.includehelp.com/cpp-programs/iswlower-function.aspx][https_www.includehelp.com_cpp-programs_iswlower-function.aspx]

c++函数中调用vc++

[https_www.includehelp.com_cpp-programs_iswlower-function.aspx]: https://www.includehelp.com/cpp-programs/iswlower-function.aspx