changing the for loop variable

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if i change the variable of the for loop the compiler did not geive me any error , but i am not sure if this is legal

C#

int i;
for(i=0;i<10;i++)
{
MessageBox.Show("i="+i.ToString());
if( i==3 ) i++;
}

Posted 25-Oct-14 22:04pm

Engineer khalid

Updated 25-Oct-14 22:13pm

v4

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Richard MacCutchan 26-Oct-14 4:31am

Yes it is perfectly legal, but it may have unintended consequences.

Engineer khalid 26-Oct-14 4:39am

long time ago ,i was a c programmer it was illegal ,but if i am mistaken then this was illegal in fortran languge. thanks god ,i am still ridding a horse

Richard MacCutchan 26-Oct-14 4:53am

Legal in C also. It's a long time since I wrote any Fortran, but I don't know why it would be illegal there, or in any other language.

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OriginalGriff · Accepted Answer · 2014-10-25T22:47:00

Solution 1

Yes, it's legal in C# - IIRC it has been legal in all C-like languages, including C.
The final clause of the for statement can be blank if you need it to:

C#

for(i=0;i<10;)
    {
    MessageBox.Show("i="+i.ToString());
    i++;
    if( i==3 ) i++;
    }

Posted 25-Oct-14 22:47pm

OriginalGriff

Comments

BillWoodruff 26-Oct-14 5:28am

Sometimes there is too much freedom :)

OriginalGriff 26-Oct-14 5:53am

Philosophy on a Sunday morning? Not sure I can cope with that...:laugh: