/*  ========================================================  *//*  CONTROL FLOW AND CONDITIONAL BRANCHING                    *//*                                                            *//*  Test control flow and conditional operations              *//*  ========================================================  */print "\n ======= QUANTITY LOGIC OPERATIONS ======== \n";X1 = 1  m;X2 = 10 m;print "\n -- Quantity Greater Than, Less Than \n";Y1 = X1 > X2;Y2 = X1 < X2;print" Y1 = ", Y1, " FALSE \n";print" Y2 = ", Y2, " TRUE  \n";print "\n -- Quantity Greater Equal Than, Less Equal Than \n";Y1 = X1 >= X2;Y2 = X1 <= X2;print" Y1 = ", Y1, " FALSE \n";print" Y2 = ", Y2, " TRUE  \n";print "\n -- Quantity Equal, Not Equal \n";Y1 = X1 == X2;Y2 = X1 != X2;print" Y1 = ", Y1, " FALSE \n";print" Y2 = ", Y2, " TRUE  \n";print "\n -- Quantity And \n";Y1 = (X1 == 1 m) && (X2 != 10 m);Y2 = (X1 != 1 m) && (X2 == 10 m);Y3 = (X1 == 1 m) && (X2 == 10 m);Y4 = (X1 != 1 m) && (X2 != 10 m);print" Y1 = ", Y1, " FALSE \n";print" Y2 = ", Y2, " FALSE  \n";print" Y3 = ", Y3, " TRUE  \n";print" Y4 = ", Y4, " FALSE  \n";print "\n -- Quantity Or  \n";Y1 = (X1 == 1 m) || (X2 != 10 m);Y2 = (X1 != 1 m) || (X2 == 10 m);Y3 = (X1 == 1 m) || (X2 == 10 m);Y4 = (X1 != 1 m) || (X2 != 10 m);print" Y1 = ", Y1, " TRUE  \n";print" Y2 = ", Y2, " TRUE  \n";print" Y3 = ", Y3, " TRUE  \n";print" Y4 = ", Y4, " FALSE \n";print "\n ======= WHILE LOOP ======== \n";print "\n -- Single Condition \n";X = 1 m;while (X <= 5 m) {   print " X = ", X, "\n";   X = X + 1 m;}print "\n -- Multiple Conditions \n";Y = 1 in;X = 1 m;while (X <= 5 m && Y <= 0.5 ft) {   print " (X, Y) = (",X,Y,")\n";   X = X + 1 m;   Y = Y + 1 in;}print "\n -- Empty Condition \n";X = 1 m;while ( ) {   if(X > 5 m) {      break;   }   print " X = ", X, "\n";   X = X + 1 m;}print "\n -- Multiple Layers \n";X = 2 m;while (X <= 5 m) {   Y = 1 in;   print "\n";   while(Y <= 1 ft) {      print "(X, Y) = (",X,Y,")\n";      Y = Y + 4 in;   }   X = X + 2 m ;}print "\n ======= FOR LOOP ======== \n";print "\n -- For-loop : Empty initializer\n";x = 1m; for(     ; x <= 5 m; x = x + 1 m) {   print "x = ", x, "\n";}print "\n -- For-loop : Empty increment \n";for(x = 1 m;    x <= 5 m;       ) {   print "x = ", x, "\n";   x = x + 1 m;}print "\n -- For-loop : Empty condition\n";for(x = 1 m;   ; x = x + 1 m ) {   if(x > 5 m) {      break;   }    print "x = ", x, "\n";}print "\n -- For-loop : Empty initializer, increment & condition\n";x = 1m;for( ;  ;  ) {    if(x > 5 m) {      break;    }    print "x = ", x, "\n";    x = x + 1m;}print "\n -- For : Single Condition \n";for(x = 1 m; x <= 5 m; x = x + 1 m) {   print "x = ", x, "\n";}print "\n -- For : Multiple Conditions \n";x = 1 m;y = 1 in;z = 100 yard;for(x = 1 m, y = 1 in, z = 100 yard;    x <= 5 m && y < 1 ft || z < 0.5 mile;    x = x + 1 m, y = y + 1 in, z = z + 400 yard) {   print " (x,y,z) = (",x, y, z,")\n";}print "\n -- For-loop : Multiple Layers \n";for(x = 1 m; x <= 2 m; x = x + 1 m) {    for( y = 11 in; y <= 1 ft; y = y + 1 in) {       for(z = 500 yard; z <= 0.5 mile ; z = z + 400 yard) {           print " (x,y,z) = (",x, y, z,")\n";       }    }}print "\n -- For-loop & While-loop Combination \n";for(x = 1 m; x <= 2 m; x = x + 1 m) {    for(y = 11 in; y <= 1 ft; y = y + 1 in) {        z = 500 yard;        while(z <= 0.5 mile) {              Coord = [x, y, z];              PrintMatrix(Coord);              z = z + 400 yard;        }    }}print "\n ======= CONDITIONAL BRANCHING  ======== \n";print "\n -- Test IF Condition \n";x = 1 ksi;if ( x < 10 ksi ) {     print " x = ", x ,"\n";} print "\n -- Test IF-THEN-ELSE Condition \n";x = 10 ksi;y = 1 MPa;if ( x < 10 ksi ) then {     print " x = ", x ,"\n";} else {     print " y = ", y ,"\n";}print "\n ======= STOPPING COMMAND ======== \n";print " \n quit;  ---- stop the program ";print " \n break; ---- break the loops : FOR, WHILE \n";print "\n ==== Break a Single Layer For-Loop\n";for(x = 1 m; x <= 5 m; x = x + 1 m) {    if(x > 3m) break;    print " x = ",x,"\n";}print "\n ==== Break a Single Layer While-Loop \n";x = 1m;while(x <= 5 m) {    if(x > 3m) break;    print " x = ",x,"\n";    x = x + 1m; }print "\n ==== Break a Multiple Layer For-Loop \n";for(x = 1 m; x <= 5 m; x = x + 1 m) {    if(x > 2 m) break;    print "x = ",x,"\n";    for( y = 1 in; y <= 1 ft; y = y + 1 in) {       if(y > 6 in) break;       print "(x,y) =(",x,y,")\n";       for(z = 100 yard; z <= 0.5 mile ; z = z + 100 yard) {           if( z > 300 yard) break;           print " (x,y,z) = (",x, y, z,")\n";       }    }}print "\n ==== Break a Multiple Layer While-Loop \n";X = 2 m;while (X <= 10 m) {   if(X < 4m) then {} else break;   Y = 1 in;   print "\n";   while(Y <= 1 ft) {      if(Y > 8 in) break;      print "(X, Y) = (",X,Y,")\n";      Y = Y + 1 in;   }   X = X + 2 m ;}print "\n ======= TURN OFF/ON Units ======== \n";print "\n Use < SetUnitsOff > to Turn Off Units Option \n";print "\n Use < SetUnitsOn > to Turn On Units Option \n";print "\n The Default Units Option is < SetUnitsOn > \n";