程序以大写和小写形式显示从 A 到 Z 的所有字母

可以使用两种方法打印小写和大写字母，第一种是使用 ASCII 值，第二种是使用循环直接打印从 'A' 到 'Z' 的值。下面是这两种方法的实现：

• 使用 ASCII 值：
  • 大写字母的 ASCII 值 – 65 到 90。
  • 小写字母的 ASCII 值 - 97 到 122。

  C++

  // C++ program to print alphabets
  #include 
  using namespace std;
    
  // Function to print the alphabet
  // in lower case
  void lowercaseAlphabets()
  {
      // lowercase
    
      for (int c = 97; c <= 122; ++c)
          cout << c << " ";
    
      cout << endl;
  }
  // Function to print the alphabet
  // in upper case
  void uppercaseAlphabets()
  {
    
      // uppercase
      for (int c = 65; c <= 90; ++c)
          cout << c << " ";
    
      cout << endl;
  }
    
  // Driver code
  int main()
  {
    
      cout << "Uppercase Alphabets" << endl;
      uppercaseAlphabets(ch);
    
      cout << "Lowercase Alphabets " << endl;
      lowercaseAlphabets(ch);
    
      return 0;
  }

  
  

  C

  // C program to print alphabets
  #include 
    
  // Function to print the alphabet
  // in lower case
  void lowercaseAlphabets()
  {
      // for lowercase
      for (int c = 97; c <= 122; ++c)
          printf("%c ", c);
      printf("\n");
  }
  // Function to print the alphabet
  // in upper case
  void uppercaseAlphabets()
  {
    
      // Run a loop from 65 to 90
      for (int c = 65; c <= 90; ++c)
    
          // print its ascii values
          printf("%c ", c);
    
      printf("\n");
  }
    
  // Driver program
  int main()
  {
    
      printf("Uppercase Alphabets\n");
      uppercaseAlphabets();
    
      printf("Lowercase Alphabets\n");
      lowercaseAlphabets();
    
      return 0;
  }

  
  

  Java

  // JAVA program to print alphabet
  class Alpha {
      private int ch;
    
      void uppercaseAlphabets()
      {
    
          // uppercase
          for (int c = 65; c <= 90; ++c)
              System.out.print(" " + c);
    
          System.out.print("\n");
      }
      void lowercaseAlphabets()
      {
    
          // lowercase
          for (int c = 97; c <= 122; ++c)
              System.out.print(" " + c);
    
          System.out.print("\n");
      }
    
      // Driver program
      public static void main(String[] args)
      {
          int ch;
          System.out.println("Uppercase Alphabets");
          Alpha ob = new Alpha();
          ob.uppercaseAlphabets();
    
          System.out.println("Lowercase Alphabets ");
          ob.lowercaseAlphabets();
      }
  }

  
  

  Python3

  # Python3 program to print alphabets
    
  # Function to print the alphabet
  # in lower case
  def lowercaseAlphabets():
    
      # lowercase
      for c in range(97, 123):
          print(chr(c), end = " ");
    
      print("");
    
  # Function to print the alphabet
  # in upper case
  def uppercaseAlphabets():
    
      # uppercase
      for c in range(65, 91):
          print(chr(c), end = " ");
    
      print("");
    
  # Driver code
  print("Uppercase Alphabets");
  uppercaseAlphabets();
    
  print("Lowercase Alphabets ");
  lowercaseAlphabets();
    
  # This code is contributed by mits

  
  

  C#

  // C# program to print alphabet
    
  using System;
  class Alpha {
      private int ch;
    
      void uppercaseAlphabets()
      {
    
          // uppercase
          for (int c = 65; c <= 90; ++c)
              Console.Write(" " + (char)c);
    
          Console.Write("\n");
      }
      void lowercaseAlphabets()
      {
    
          // lowercase
          for (int c = 97; c <= 122; ++c)
              Console.Write(" " + (char)c);
    
          Console.Write("\n");
      }
    
      // Driver program
      public static void Main()
      {
          int ch;
          Console.WriteLine("Uppercase Alphabets");
          Alpha ob = new Alpha();
          ob.uppercaseAlphabets();
    
          Console.WriteLine("Lowercase Alphabets ");
          ob.lowercaseAlphabets();
      }
  }

  
  
  
  
  
  
  
  

  ---

  输出：

  Uppercase Alphabets
  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 
  Lowercase Alphabets
  a b c d e f g h i j k l m n o p q r s t u v w x y z 
  

• 直接使用字母，即
  • 对于小写字母 - 运行从 'a' 到 'z' 的循环
  • 对于大写字符- 运行从 'A' 到 'Z' 的循环

  C++

  // C++ program to print alphabets
  #include 
  using namespace std;
    
  // Function to print the alphabet
  // in lower case
  void lowercaseAlphabets()
  {
      // lowercase
    
      for (char c = 'a'; c <= 'z'; ++c)
          cout << c << " ";
    
      cout << endl;
  }
  // Function to print the alphabet
  // in upper case
  void uppercaseAlphabets()
  {
    
      // uppercase
      for (char c = 'A'; c <= 'Z'; ++c)
          cout << c << " ";
    
      cout << endl;
  }
    
  // Driver code
  int main()
  {
    
      cout << "Uppercase Alphabets" << endl;
      uppercaseAlphabets(ch);
    
      cout << "Lowercase Alphabets " << endl;
      lowercaseAlphabets(ch);
    
      return 0;
  }
  

  C

  // C program to print alphabets
  #include 
    
  // Function to print the alphabet
  // in lower case
  void lowercaseAlphabets()
  {
      // for lowercase
      for (char c = 'a'; c <= 'z'; ++c)
          printf("%c ", c);
      printf("\n");
  }
  // Function to print the alphabet
  // in upper case
  void uppercaseAlphabets()
  {
    
      // Run a loop from 65 to 90
      for (char c = 'A'; c <= 'Z'; ++c)
    
          // print its ascii values
          printf("%c ", c);
    
      printf("\n");
  }
    
  // Driver program
  int main()
  {
    
      printf("Uppercase Alphabets\n");
      uppercaseAlphabets();
    
      printf("Lowercase Alphabets\n");
      lowercaseAlphabets();
    
      return 0;
  }
  

  Java

  // Java program to print alphabet
  class Alpha {
      private int ch;
    
      void uppercaseAlphabets()
      {
    
          // uppercase
          for (char c = 'A'; c <= 'Z'; ++c)
              System.out.print(" " + c);
    
          System.out.print("\n");
      }
      void lowercaseAlphabets()
      {
    
          // lowercase
          for (char c = 'a'; c <= 'z'; ++c)
              System.out.print(" " + c);
    
          System.out.print("\n");
      }
    
      // Driver program
      public static void main(String[] args)
      {
    
          System.out.println("Uppercase Alphabets");
          Alpha ob = new Alpha();
          ob.uppercaseAlphabets();
    
          System.out.println("Lowercase Alphabets ");
          ob.lowercaseAlphabets();
      }
  }
  

  C＃

  // C# program to print alphabet
  using System;
    
  public class Alpha {
      private int ch;
    
      // Function to print the alphabet
      // in upper case
      void uppercaseAlphabets()
      {
    
          // uppercase
          for (char c = 'A'; c <= 'Z'; ++c)
              Console.Write(" " + c);
    
          Console.Write("\n");
      }
    
      // Function to print the alphabet
      // in lower case
      void lowercaseAlphabets()
      {
    
          // lowercase
          for (char c = 'a'; c <= 'z'; ++c)
              Console.Write(" " + c);
    
          Console.Write("\n");
      }
    
      // Driver code
      public static void Main()
      {
          Console.WriteLine("Uppercase Alphabets");
          Alpha ob = new Alpha();
          ob.uppercaseAlphabets();
    
          Console.WriteLine("Lowercase Alphabets ");
          ob.lowercaseAlphabets();
      }
  }
    
  // This code is contributed by Rajput-Ji
  

  输出：

  Uppercase Alphabets
  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 
  Lowercase Alphabets
  a b c d e f g h i j k l m n o p q r s t u v w x y z 
  

这些程序连续打印大写和小写的所有字母。