How to print alphabet in c uppercase and lowercase

Answer 1

here it goes
char i, j;
for(i='A';i<='Z';i++) //uppercase
{
printf("%c", i) ;
}
for(i='a';i<='z';i++) //lowercase
{
printf("%c", i) ;
}

Answer 2

sorry for that it was my mistake.
thanks.

Answer 3

but why you have taken j

Answer 4

// Prints the alphabet in format "Aa - Zz"
for (char ch = 'a'; ch <= 'z'; ch++)
{
printf("%c%c", (ch ^ 0x20), ch); // using bit flips to get the uppercase
}