Step-by-step explanation:
There are several issues with the program that prevent it from correctly reversing a word. Here is a corrected version of the code with comments explaining the changes:
CLS
REM reversing a word
INPUT "Enter a word"; W$
R$ = "" REM Initialize R$ to an empty string
FOR P = LEN(W$) TO 1 STEP -1 REM Use STEP -1 to iterate backwards
E$ = MID(W$, P, 1) REM Get the character at position P
R$ = R$ + E$ REM Add the character to the end of R$
NEXT P
PRINT "Reverse word is "; R$ REM Print R$, not E$
END
Here are the changes that were made:
Initialize R$ to an empty string before the loop, since we want to build the reversed word from scratch.
Use STEP -1 to iterate backwards through the characters of the word, starting from LEN(W$) and ending at 1.
Get the character at position P using MID(W$, P, 1) instead of MID(W$, 1, P), which was incorrect. We want to get the character at the current position, not the first P characters of the string.
Add the character E$ to the end of R$ using the concatenation operator +.
Print R$ instead of E$ to display the reversed word.
With these changes, the program should correctly reverse the input word.