How do I do nothing for the last else statement, and move on to the next part of the array?

Question

What should I do

If I input "a a" and shift it once I expect it to return "b b" however I get an error I want to the for loop to skip over anything that isn't A-Z, a-z, or 0-9

for ( ; i <= w; i++)

    if ((word[i] + rotx) >= 65 && (word[i] + rotx) <=90)
    {
        word[i] += (rotx);
    }
    else if ((word[i] + rotx) >= 97 && (word[i] + rotx) <=122)
    {
        word[i] += (rotx);
    }
    else if ((word[i] + rotx) >= 48 && (word[i] +rotx) <= 57)
    {
        word[i] += (rotx);
    }
    else if ((word[i] + rotx) > 90 && (word[i]+rotx) <97)
    {
        word[i] = 64 + (rotx - (90-word[i]));
    }
    else if ((word[i] + rotx) > 122)
    {
        word[i] = 96 + (rotx - (122-word[i]));
    }
    else if ((word[i] + rotx) > 57)
    {
        word[i] = 47 + (rotx - (57-word[i]));
    }

OUTPUT enter string "a a" enter rotations 1

-bash: 1: command not found

Solution 1

You can just not use an else. Or use a continue statement, if you want the else to be there.

Solution 2

If you wish your program to just fall through to the next statement, just don't include another else part of have an empty body as shown by you.