Hello,

Consider the following code: 

start=1.6;      
for($inc=.1;$inc<=.9;$inc=$inc+.1{
#print"\nThe value of inc:";             
#print"\n$inc";
$start_pt=$start+$inc;                     
#print"\nThe value of start_pt :";             #print"\n$start_pt";   
+  
SWITCH: 
{if ($start_pt==2) {$start_pt=$start_pt-.9; last SWITCH;}  
if($start_pt==2.1){$start_pt=$start_pt-.99; last SWITCH;}  
if($start_pt==2.2){$start_pt=$start_pt-1.08;last SWITCH;}  
if($start_pt==2.3){$start_pt=$start_pt-1.17;last SWITCH;}  
if($start_pt==2.4){$start_pt=$start_pt-1.26;last SWITCH;}  
if($start_pt==2.5){$start_pt=$start_pt-1.35;last SWITCH;}  
$nothing = 1;
 }   
#print"\nThe value of start_pt :"; 
#print"\n$start_pt";    
SWITCH: 
{if ($start_pt==1.7) {$end_pt=1.8; last SWITCH;}    
if($start_pt==1.8) {$end_pt=1.9;  last SWITCH;}
if($start_pt==1.9) {$end_pt=1.10; last SWITCH;}
if($start_pt==1.10){$end_pt=1.11; last SWITCH;} 
if($start_pt==1.11){$end_pt=1.12; last SWITCH;}
if($start_pt==1.12){$end_pt=1.13; last SWITCH;}
if($start_pt==1.13){$end_pt=1.14; last SWITCH;}
if($start_pt==1.14){$end_pt=1.15; last SWITCH;}       $nothing = 1; 
}  
print"\nThe value of end_pt :";                    print"\n$end_pt";
}

[download]


The first time the value of $start_pt is printed we get
th foll.values: 

1.7 
1.8 
1.9 
2 
2.1 
2.2 
2.3 
2.4 
2.5

[download]

When we print the value of $start_pt after the first switch
statement we get: 

1.7 
1.8 
1.9 
1.1 
1.11 
1.12 
1.13 
1.14 
1.15

[download]
For the value 1.1 of $start_pt is it possible to have this
value read as 1.10 and not truncated to 1.1.Actually I
need to use these values as text indices in a Tk text
widget.The 1.10 means the 10th char on the first
line.If this value is read as 1.1, this would mean 1st
char on 1st line, which is not what is required.

Also the values of end_pt are printing as: 
1.9 
1.9 
1.11 
1.12 
1.13 
1.14 
1.15 
1.15

[download]

whereas these are the values that need to be printed: 
1.8 
1.9 
1.10 
1.11 
1.12 
1.13 
1.14 
1.15

[download]

What is the mistake here?
Thanx.

In reply to Simple loop question by perl_seeker

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