section_heading: 1968: Algol68
paragraph_text: Algol68 has what was considered <b>the</b> universal loop, the full syntax is: <u>for</u> i <u>from</u> 1 <u>by</u> 1 <u>to</u> 3 <u>while</u> i≠4 <u>do</u> ~ <u>od</u> There are several unusual aspects of the construct <u>int</u> sum sq:=0; <u>for</u> i <u>while</u> print (("So far:",i, newline)); sum sq≤1000 <u>do</u> sum sq+:=i↑2 <u>od</u>