Program to toggle all characters in a string

in a given string in which we toggle all characters.

Examples:

Input  : gfg
Output : GFG

Input  : aBc12#
Output : AbC12#

Input  : tu@kmiNi
Output : TU@KMInI

Recommended: Please try your approach on {IDE} first, before moving on to the solution.

Traverse the given string, if uppercase characters comes, convert into lowercase and lowercase latter convert into uppercase.

C++

// c++ program to toggle all characters 
#include<bits/stdc++.h> 
using namespace std; 
  
void toggleChars(char str[]) 
{ 
    for (int i=0; str[i]!='\0'; i++) 
    { 
        if (str[i]>='A' && str[i]<='Z') 
            str[i] = str[i] + 'a' - 'A'; 
        else if (str[i]>='a' && str[i]<='z') 
            str[i] = str[i] + 'A' - 'a'; 
    } 
} 
  
// Driver code 
int main() 
{ 
    char str[] = "GeKf@rGeek$"; 
    toggleChars(str); 
    cout << "String after toggle " << endl; 
    cout << str << endl; 
    return 0; 
} 

Java

// Java program to toggle all characters 
  
class GFG  
{ 
  
static void toggleChars(char str[]) 
{ 
    for (int i=0; i<str.length; i++) 
    { 
        if (str[i]>='A' && str[i]<='Z') 
            str[i] = (char) (str[i] + 'a' - 'A'); 
        else if (str[i]>='a' && str[i]<='z') 
            str[i] = (char) (str[i] + 'A' - 'a'); 
    } 
} 
  
// Driver code  
public static void main(String[] args)  
{ 
    char str[] = "GeKf@rGeek$".toCharArray(); 
    toggleChars(str); 
    System.out.println("String after toggle "); 
    System.out.println(String.valueOf(str)); 
} 
} 
  
// This code is contributed by 29AjayKumar 

Python3

# Python3 program to toggle all characters 
def toggleChars(str): 
  
    for i in range(len(str)): 
        if (str[i] >= 'A' and str[i] <= 'Z'): 
            str = str[:i] + chr(ord(str[i]) + \ 
                     ord('a') - ord('A')) + str[i + 1:]; 
        elif (str[i] >= 'a' and str[i] <= 'z'): 
            str = str[:i] + chr(ord(str[i]) + \ 
                     ord('A') - ord('a')) + str[i + 1:]; 
    return str; 
  
# Driver code  
str = "GeKf@rGeek$"; 
str = toggleChars(str); 
print(str); 
      
# This code is contributed by 29AjayKumar 

C#

// C# program to toggle all characters 
using System;  
      
class GFG  
{ 
  
static void toggleChars(char []str) 
{ 
    for (int i = 0; i < str.Length; i++) 
    { 
        if (str[i] >= 'A' && str[i] <= 'Z') 
            str[i] = (char) (str[i] + 'a' - 'A'); 
        else if (str[i] >= 'a' && str[i] <= 'z') 
            str[i] = (char) (str[i] + 'A' - 'a'); 
    } 
} 
  
// Driver code  
public static void Main(String[] args)  
{ 
    char []str = "GeKf@rGeek$".ToCharArray(); 
    toggleChars(str); 
    Console.WriteLine("String after toggle "); 
    Console.WriteLine(String.Join("",str)); 
} 
} 
  
// This code is contributed by Princi Singh 

Output:

gEkF@RgEEK$

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My Personal Notes

Recommended: Please try your approach on {IDE} first, before moving on to the solution.

C++

Java

Python3

C#

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