The for statement

for ( for-init-statement conditionopt ; expressionopt ) statement

is equivalent to

{
    for-init-statement
    while ( condition ) {
        statement
        expression ;
    }
}

except that names declared in the for-init-statement are in the same declarative-region as those declared in
the condition, and except that a continue in statement (not enclosed in another iteration statement) will
execute expression before re-evaluating condition.

int main()
{
    int const N = 5;
    int x[N];
    
    for(int n = N; n--; *p = n) int* p = x + n;
}