More if's?
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How do you make it so an if statement has a lot of things to match? It's hard to explain, but instead of '&&', is there a way to make it so you can have a bunch of if's to follow? I hope you understand what I mean... Thanks in advance, M.S.
You can do one of three things: 1 - if (x == 0 && y ==1 && z == 2) 2 - if (x == 0) { if(y == 1) { if ( z== 2 ) { 3 - if (ValidateForm()) { } where you have a lot of stuff to check and you factor it into a function ( this works only if the things you are validating are member variables ) If you had lots of different ifs, as in if (x == 0 ) { } else if (x == 1) { } else if (x==2) then you'd want a switch statement. But, if you have a lot of things to check, there's no way around that you need to specify what they all are.
Christian Graus - Microsoft MVP - C++ "I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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You can do one of three things: 1 - if (x == 0 && y ==1 && z == 2) 2 - if (x == 0) { if(y == 1) { if ( z== 2 ) { 3 - if (ValidateForm()) { } where you have a lot of stuff to check and you factor it into a function ( this works only if the things you are validating are member variables ) If you had lots of different ifs, as in if (x == 0 ) { } else if (x == 1) { } else if (x==2) then you'd want a switch statement. But, if you have a lot of things to check, there's no way around that you need to specify what they all are.
Christian Graus - Microsoft MVP - C++ "I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
No, actually, I mean (though this isn't correct, something close to the idea), like this:
if (condition) || condition || condition and so on...or is that what the || operator does? -
No, actually, I mean (though this isn't correct, something close to the idea), like this:
if (condition) || condition || condition and so on...or is that what the || operator does?Like this?
if ( a )
{
...
}
else
{
if ( b )
{
...
}
else
{
...
}
} -
Like this?
if ( a )
{
...
}
else
{
if ( b )
{
...
}
else
{
...
}
}No, I mean having more things that have to be true (for example) in the if statement? I'm sorry, it's complicated...
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No, actually, I mean (though this isn't correct, something close to the idea), like this:
if (condition) || condition || condition and so on...or is that what the || operator does?I don't follow. condition is different every time ? if (x == 1 || y == 2 || z == 3) will succeed if only one of those statements is true. && requires they are all true.
Christian Graus - Microsoft MVP - C++ "I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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No, I mean having more things that have to be true (for example) in the if statement? I'm sorry, it's complicated...
Only because you're not making sense. Try giving a real world example, so we can work out what you mean.
Christian Graus - Microsoft MVP - C++ "I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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No, I mean having more things that have to be true (for example) in the if statement? I'm sorry, it's complicated...
That's what
&&is for. -
That's what
&&is for.Is that what he means ? MasterSharp, this is why we discouraged you from writing owner drawn controls yesterday. Not because we don't want to help, but because you need to grasp the basics first. If this is what you meant, I urge you again to buy a book on C# and work through it, so you cover these sort of elementary gaps in your knowledge and build a firm foundation you can build on.
Christian Graus - Microsoft MVP - C++ "I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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I don't follow. condition is different every time ? if (x == 1 || y == 2 || z == 3) will succeed if only one of those statements is true. && requires they are all true.
Christian Graus - Microsoft MVP - C++ "I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
How many '&&'s can you use, is what I mean. I guess that what it boils down to.
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How many '&&'s can you use, is what I mean. I guess that what it boils down to.
Until your
&key wears out, and even then you can copy-and-paste. -
Until your
&key wears out, and even then you can copy-and-paste.Oh... I thought you could only use it once...
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Oh... I thought you could only use it once...
Well, next time... TRY IT!! You ain't gonna hurt the computer.
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Well, next time... TRY IT!! You ain't gonna hurt the computer.
Well, it just seemed it would screw up tough, so thanks for the advice!
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Well, it just seemed it would screw up tough, so thanks for the advice!
You can't screw up... unless you're testing a hard-disk-wiper-outer or something.
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How do you make it so an if statement has a lot of things to match? It's hard to explain, but instead of '&&', is there a way to make it so you can have a bunch of if's to follow? I hope you understand what I mean... Thanks in advance, M.S.
Hi,
MasterSharp wrote:
Forum C# Subject: Re: More if's? Sender: MasterSharp Date: 20:08 1 Oct '07 How do you make it so an if statement has a lot of things to match? It's hard to explain, but instead of '&&', is there a way to make it so you can have a bunch of if's to follow? I hope you understand what I mean... Thanks in advance, M.S.
The long and short of it is that you can chain together as many expressions as you like with &&'s and ||'s. I'd recommend picking up an introductory C# book - there are a number of good ones. Jesse Liberty's "Learning C#" is a good one, or you might find the Head First C# book interesting to read - it isn't your standard C# text. Apress has some good ones too. I have several books on the subject and each provides a different perspective. I think that you'd really benefit by getting one of these books and working through it. Most have exercises, and those are helpful. There are a bunch of great folks here at Code Project who can answer questions, but you're not going to learn the language nearly as well as if you invest some time with a good text - your question indicates that you are new to the language and probably haven't worked through an introductory text, because just about any good introductory text would have provided the answer to that question and TONS of others you are likely to have along the way. .NET development, and programming in general, is a journey and NONE of us has it all figured out - if you'll invest the time upfront with a good text on the language, and then experiment along the way, read the MS-provided help pages, you'll likely be quite capable at developing C# apps in a reasonable period of time. Of course, when you are stumped on a program, there are a bunch of folks here that would be happy to take a look at the code snippet and respond. At least that has been my experience. Good Luck!
It isn't enough to do well in life. One must do good when and where one can. Otherwise, what's the point?
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How many '&&'s can you use, is what I mean. I guess that what it boils down to.
Seriously, you will never learn anything if you don't try basic stuff like this before asking others to explain it to you.
Christian Graus - Microsoft MVP - C++ "I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
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You can't screw up... unless you're testing a hard-disk-wiper-outer or something.
PIEBALDconsult wrote:
unless you're testing a hard-disk-wiper-outer or something.
well, you know I started out with my first computer project to be a disk operating system... but then I smartly decided to start with drawing user interfaces. So far, in the last 27 years of computer programmng, I have crashed many computers, but I have never managed to crash a user. :->
_________________________ Asu no koto o ieba, tenjo de nezumi ga warau. Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)
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Well, next time... TRY IT!! You ain't gonna hurt the computer.
PIEBALDconsult wrote:
Well, next time... TRY IT!!
Programming is like pinball. The reward for doing it well is the opportunity of doing it again. - programmers' saying
_________________________ Asu no koto o ieba, tenjo de nezumi ga warau. Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)
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PIEBALDconsult wrote:
Well, next time... TRY IT!!
Programming is like pinball. The reward for doing it well is the opportunity of doing it again. - programmers' saying
_________________________ Asu no koto o ieba, tenjo de nezumi ga warau. Talk about things of tomorrow and the mice in the ceiling laugh. (Japanese Proverb)
But my wife is better at pinball than I am... oh, wait a minute... Programming Sex is like pinball. The reward for doing it well is the opportunity of doing it again. :cool:
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Well, next time... TRY IT!! You ain't gonna hurt the computer.