QString and .arg()

[spirit]

What's your Qt's version? This code works fine for me.

[jesse_mark]

it is Qt 4.8.1 ... you mean you got the spaces after the name like
"Student Name******** = jemes" ??

[spirit]

I'm also using 4.8.1 and I've got such output:

int main(int, char**) " Student Name = James"

[jesse_mark]

the editor eat the space but, i see the spaces you got same which is in the front : "********Student Name = James"

but the result i want is "Student Name******** = James" .

"*": means space

[spirit]

see Oleg's post above.

[Oleg]

From the docs:

fieldWidth specifies the minimum amount of space that argument a shall occupy. If a requires less space than fieldWidth, it is padded to fieldWidth with character fillChar. A positive fieldWidth produces right-aligned text. A negative fieldWidth produces left-aligned text.

So, try

arg(str1, -20)

arg(str1, -20)

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[yeye_olive]

The documentation for QString::arg() specifies that if the fieldWidth argument is positive (which is the case in your example), then you will get right-aligned text. This is why spaces are inserted on the left.

Also, do not use .arg().arg().arg()! Can you see what would happen if a student decided to put "%1" in their name? (BTW I just realized that the example in the docs makes this mistake.)

I would use QString("%1 = %2").arg(name, value) or QString("%1 = %2").arg(QString("%1").arg(name, -20), value) for a left-aligned padded student name.