From Cppwiki
for is a keyword of the C and C++ languages. It forms a loop statement.
Syntax:
for(init-statement; check-statement; increment-expr)
body-statement
- init-statement declares one or more variables of a single type, with initial values.
- check-statement computes a boolean value which determines whether body-statement will be executed.
- incr-statement modifies variable values for the next loop iteration.