../programs/61702.c: In function 'is_valid_message':
../programs/61702.c:14: error: 'for' loop initial declaration used outside C99 mode
../programs/61702.c:16: error: 'for' loop initial declaration used outside C99 mode
../programs/61702.c: In function 'main':
../programs/61702.c:38: error: 'for' loop initial declaration used outside C99 mode
../programs/61702.c:40: error: 'for' loop initial declaration used outside C99 mode
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