C :

#include<stdio.h>
int main()
{
	printf("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");
	
	
}

C++ :

#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
  char zimu='@';
  for(int i=1;i<=25;++i)
  {
  zimu+=1;
  cout<<zimu<<" ";
  }
  cout<<"Z";
  return 0;
}

Pascal :

program aa;
begin
 write('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');
END.