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Mathematica/FlowControl
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Control Flow
If Statements
For Loop
For[start, test, incr, body] executes start, then repeatedly evaluates body
and incr until test fails to give True.
Example:
For[x=1, x<5, x=x+1, Print["x=",x]]
While Loop
While[test, body] evaluates test, then body, repetitively, until test first fails to give True.
Example:
Define a Function f[x]
f[x_] := (x^2 -1)/(x+1)
Use the function in a while loop to calculate the sum of those terms.
i=0; While[i < 0, tot += f[i]; i++].
Note that the roles of ; and , are reversed relative to the C programming language.