Q:

iswlower() function in C++

mahmoud2506
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2022-05-05
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The iswlower() function is defined in the header file <cwctype.h>.

Prototype:

    int iswlower(wchar_t rs);

Parameter:

wchar_t rs – Checks the given character is in lower case or not.

Return type:

The function returns two values:

  1. Zero: if rs is non - lowercase character.
  2. Non Zero: if rs is lowercase character.

Use of function

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

 

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All Answers

mahmoud2506
2022-05-05
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Program 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

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

Program 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

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

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