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Task/Babbage-problem/BBC-BASIC/babbage-problem-2.basic

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+REM Lines that begin 'REM' are explanatory remarks addressed to the human reader.
+
+REM The machine will ignore them.
+
+LET n = 269696
+
+REPEAT
+
+  LET n = n + 1000000
+
+  REM Find the next number that ends in 269,696.
+
+  REM The function SQR finds the square root.
+
+  LET root = SQR n
+
+  REM The function INT truncates a real number to an integer.
+
+UNTIL root = INT root
+
+REM If the square root is equal to its integer truncation, then it is an integer: so we have found our answer.
+
+PRINT "The smallest number whose square ends in 269696 is" root
+
+PRINT "Its square is" n