C Program to Convert Lowercase Character to Uppercase Character

In this tutorial, i am going to show you how to convert lowercase characters to uppercase characters in c program with the help of function and ASCII value.

All C Program to Convert Lowercase Character to Uppercase Character

  • C Program to Convert Lowercase Character to Uppercase Character using Function
  • C Program to Convert Lowercase Character to Uppercase Character using ASCII Value

C Program to Convert Lowercase Character to Uppercase Character using Function

#include <stdio.h> 
#include <ctype.h>
int main()
{
  char Ch;
 
  printf("\n Please Enter any alphabet :- ");
  scanf(" %c", &Ch);
  if (isalpha(Ch) )
   {  
     Ch = toupper(Ch); 
     printf ("\n Uppercase of Entered character is %c", Ch);
   }
  else
   {
     printf("\n Please Enter Valid Alphabet");
   }  
}

The result of the above c program; as follows:

Please Enter any alphabet :- a
Uppercase of Entered character is A

C Program to Convert Lowercase Character to Uppercase Character using ASCII Value

#include <stdio.h> 
int main()
{
  char Ch;
 
  printf("\n Please Enter any alphabet :- ");
  scanf(" %c", &Ch);
  
  if (isalpha(Ch) )
  {
   if (Ch>=97 && Ch<=122)
    {  
      Ch = Ch-32; 
      printf ("\n Uppercase of Entered character is %c", Ch);
    }
   else
    {
      printf("\n You Already Entered Uppercase Character");
    }  
  }
  else
   {
     printf("\n Entered character is Not an Alphabet");
   }  
}

The result of the above c program; as follows:

Please Enter any alphabet :- j
Uppercase of Entered character is J

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