Loop Iteration Examples

#include <fstream.hfa>

struct S { int i, j; };
void ?{}( S & s ) { s.[i, j] = 0; }
void ?{}( S & s, int i ) { s.[i, j] = [i, 0]; }
void ?{}( S & s, int i, int j ) { s.[i, j] = [i, j]; }
void ?{}( S & s, zero_t ) { s.[i, j] = 0; }
void ?{}( S & s, one_t ) { s.[i, j] = 1; }
int ?<?( S t1, S t2 ) { return t1.i < t2.i && t1.j < t2.j; }
int ?<=?( S t1, S t2 ) { return t1.i <= t2.i && t1.j <= t2.j; }
int ?>?( S t1, S t2 ) { return t1.i > t2.i && t1.j > t2.j; }
int ?>=?( S t1, S t2 ) { return t1.i >= t2.i && t1.j >= t2.j; }
S ?=?( S & t1, S t2 ) { t1.i = t2.i; t1.j = t2.j; return t1; }
S ?+=?( S & t1, S t2 ) { t1.i += t2.i; t1.j += t2.j; return t1; }
S ?+=?( S & t, one_t ) { t.i += 1; t.j += 1; return t; }
S ?-=?( S & t1, S t2 ) { t1.i -= t2.i; t1.j -= t2.j; return t1; }
S ?-=?( S & t, one_t ) { t.i -= 1; t.j -= 1; return t; }
ofstream & ?|?( ofstream & os, S v ) { return os | '(' | v.i | v.j | ')'; }

int main() {
	sout | nlOff;						// turn off auto newline
	for ( i; 1 ~ @ ) {
	  if ( i > 10 ) break;
		sout | i;
	}									sout | nl | nl | nl | nl;
	for ( i; 10 -~ @ ) {
	  if ( i < 0 ) break;
		sout | i;
	}									sout | nl | nl | nl | nl;
	for ( i; 2 ~ @ ~ 2 ) {
	  if ( i > 10 ) break;
		sout | i;
	}									sout | nl | nl | nl | nl | nl;
	for ( i; 2.1 ~ @ ~ @ ) {
	  if ( i > 10.5 ) break;
		sout | i;
		i += 1.7;
	}									sout | nl | nl | nl | nl;
	for ( i; 10 -~ @ ~ 2 ) {
	  if ( i < 0 ) break;
		sout | i;
	}									sout | nl | nl | nl | nl | nl;
	for ( i; 12.1 ~ @ ~ @ ) {
	  if ( i < 2.5 ) break;
		sout | i;
		i -= 1.7;
	}									sout | nl | nl;

	for ( i; 10 : j; -5 ~ @ ) { sout | i | j; } sout | nl;
	for ( i; 10 : j; -5 -~ @ ) { sout | i | j; } sout | nl;
	for ( i; 10 : j; -5 ~ @ ~ 2 ) { sout | i | j; } sout | nl;
	for ( i; 10 : j; -5 -~ @ ~ 2 ) { sout | i | j; } sout | nl | nl;

	for ( j; -5 ~ @ : i; 10 ) { sout | i | j; } sout | nl;
	for ( j; -5 -~ @ : i; 10 ) { sout | i | j; } sout | nl;
	for ( j; -5 ~ @ ~ 2 : i; 10 ) { sout | i | j; } sout | nl;
	for ( j; -5 -~ @ ~ 2 : i; 10 ) { sout | i | j; } sout | nl | nl;

	for ( j; -5 -~ @ ~ 2 : i; 10 : k; 1.5 ~ @ ) { sout | i | j | k; } sout | nl;
	for ( j; -5 -~ @ ~ 2 : k; 1.5 ~ @ : i; 10 ) { sout | i | j | k; } sout | nl;
	for ( k; 1.5 ~ @ : j; -5 -~ @ ~ 2 : i; 10 ) { sout | i | j | k; } sout | nl | nl | nl;

	for ( S s = (S){0}; s < (S){10,10}; s += (S){1} ) { sout | s; } sout | nl;
    for ( s; (S){10,10} ) { sout | s; } sout | nl;
    sout | nl;
    for ( s; (S){0} ~ (S){10,10} ) { sout | s; } sout | nl;
    for ( s; (S){0} ~ (S){10,10} ~ (S){1} ) { sout | s; } sout | nl;
    for ( s; (S){0} ~= (S){10,10} ) { sout | s; } sout | nl;
    for ( s; (S){0} ~= (S){10,10} ~ (S){1} ) { sout | s; } sout | nl;
    sout | nl;
    for ( s; (S){10,10} -~ (S){0} ) { sout | s; } sout | nl;
    for ( s; (S){10,10} -~ (S){0} ~ (S){1} ) { sout | s; } sout | nl;
    for ( s; (S){10,10} -~= (S){0} ) { sout | s; } sout | nl;
    for ( s; (S){10,10} -~= (S){0} ~ (S){1} ) { sout | s; } sout | nl;
}
























1 2 3 4 5 6 7 8 9 10



10 9 8 7 6 5 4 3 2 1 0



2 4 6 8 10




2.1 3.8 5.5 7.2 8.9



10 8 6 4 2 0




12.1 10.4 8.7 7 5.3 3.6

0 -5 1 -4 2 -3 3 -2 4 -1 5 0 6 1 7 2 8 3 9 4
0 -5 1 -6 2 -7 3 -8 4 -9 5 -10 6 -11 7 -12 8 -13 9 -14
0 -5 1 -3 2 -1 3 1 4 3 5 5 6 7 7 9 8 11 9 13
0 -5 1 -7 2 -9 3 -11 4 -13 5 -15 6 -17 7 -19 8 -21 9 -23

0 -5 1 -4 2 -3 3 -2 4 -1 5 0 6 1 7 2 8 3 9 4
0 -5 1 -6 2 -7 3 -8 4 -9 5 -10 6 -11 7 -12 8 -13 9 -14
0 -5 1 -3 2 -1 3 1 4 3 5 5 6 7 7 9 8 11 9 13
0 -5 1 -7 2 -9 3 -11 4 -13 5 -15 6 -17 7 -19 8 -21 9 -23

0 -5 1.5 1 -7 2.5 2 -9 3.5 3 -11 4.5 4 -13 5.5 5 -15 6.5 6 -17 7.5 7 -19 8.5 8 -21 9.5 9 -23 10.5
0 -5 1.5 1 -7 2.5 2 -9 3.5 3 -11 4.5 4 -13 5.5 5 -15 6.5 6 -17 7.5 7 -19 8.5 8 -21 9.5 9 -23 10.5
0 -5 1.5 1 -7 2.5 2 -9 3.5 3 -11 4.5 4 -13 5.5 5 -15 6.5 6 -17 7.5 7 -19 8.5 8 -21 9.5 9 -23 10.5

(0 0)(1 1)(2 2)(3 3)(4 4)(5 5)(6 6)(7 7)(8 8)(9 9)
(0 0)(1 1)(2 2)(3 3)(4 4)(5 5)(6 6)(7 7)(8 8)(9 9)

(0 0)(1 1)(2 2)(3 3)(4 4)(5 5)(6 6)(7 7)(8 8)(9 9)
(0 0)(1 1)(2 2)(3 3)(4 4)(5 5)(6 6)(7 7)(8 8)(9 9)
(0 0)(1 1)(2 2)(3 3)(4 4)(5 5)(6 6)(7 7)(8 8)(9 9)(10 10)
(0 0)(1 1)(2 2)(3 3)(4 4)(5 5)(6 6)(7 7)(8 8)(9 9)(10 10)

(10 10)(9 9)(8 8)(7 7)(6 6)(5 5)(4 4)(3 3)(2 2)(1 1)
(10 10)(9 9)(8 8)(7 7)(6 6)(5 5)(4 4)(3 3)(2 2)(1 1)
(10 10)(9 9)(8 8)(7 7)(6 6)(5 5)(4 4)(3 3)(2 2)(1 1)(0 0)
(10 10)(9 9)(8 8)(7 7)(6 6)(5 5)(4 4)(3 3)(2 2)(1 1)(0 0)