Warning, premature end of input, use Shift + Enter to avoid this message. - Maple Help

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Warning, premature end of input , use <Shift> + <Enter> to avoid this message.

Error, unterminated loop

Error, unterminated for loop

 Description To enter multiline inputs without generating warnings, press the Shift+Enter keys.  This produces another line in the same input region.

Examples

Example 1: With 1-D Math input, the warning message premature end of input occurs.

 > for i from 1 to 5 do f(i)

Solution: Use the Shift+Enter keys.

 > for i from 1 to 5 do f(i) end do;
 ${f}{}\left({1}\right)$
 ${f}{}\left({2}\right)$
 ${f}{}\left({3}\right)$
 ${f}{}\left({4}\right)$
 ${f}{}\left({5}\right)$ (2.1)

Example 2: With 2-D Math input, the error message unterminated loop occurs.

 >
 

Solution: Use the Shift+Enter keys.

 >
 ${f}{}\left({1}\right)$
 ${f}{}\left({2}\right)$
 ${f}{}\left({3}\right)$
 ${f}{}\left({4}\right)$
 ${f}{}\left({5}\right)$ (2.2)

Example 3

Sometimes you may see this error if you inadvertently hit Enter before you finish the input.  This example is missing the right parenthesis:

 > sin(Pi
 > 

To fix the problem, simply complete the input expression. Here, the matching parenthesis needs to be added:

 > $\mathrm{sin}\left(\mathrm{π}\right)$
 ${0}$ (2.3)