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How to write code to change lower case to upper case

 
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How to write code to change lower case to upper case
andy1988
post 5 Mar, 2008 - 01:22 PM
Post #1


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Joined: 4 Mar, 2008
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Hey,

Wonder if you could tell me how to write a code in C to change lower case letter 'i' to uppercase letter 'I' in a text file whenever it occurs on its own

For example:

one day i walked to the shop

change this to

one day I walked to the shop

Using an if statement if possible

Thanks =]

This post has been edited by andy1988: 5 Mar, 2008 - 01:41 PM
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captainhampton
post 5 Mar, 2008 - 01:26 PM
Post #2


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There is are functions called "toupper" and "tolower" that do just what you are asking. An example of such an instance is as follows:

cpp


    char d='a';  
    d=toupper(d);
    cout<<d;


Google "toupper c++" for a wealth more of information on the topic.
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andy1988
post 5 Mar, 2008 - 01:44 PM
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QUOTE(captainhampton @ 5 Mar, 2008 - 02:26 PM) *

There is are functions called "toupper" and "tolower" that do just what you are asking. An example of such an instance is as follows:

cpp


    char d='a';  
    d=toupper(d);
    cout<<d;


Google "toupper c++" for a wealth more of information on the topic.



I need code in C rather than C++, is there a way to use toupper in just C?

Ive searched on the net, but cant figure out how to use it

Thanks for your reply =]
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spazzedout
post 5 Mar, 2008 - 02:23 PM
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you can use

if( char > 'a' || char < 'z')
{
char = char - 32
}
if( char < 'A' || char > 'Z')
{
}

the above code is just an example. it wouldn't work just yet, but if you alter it correctly you should be able to get it working smile.gif
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andy1988
post 5 Mar, 2008 - 02:55 PM
Post #5


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QUOTE(spazzedout @ 5 Mar, 2008 - 03:23 PM) *

you can use

if( char > 'a' || char < 'z')
{
char = char - 32
}
if( char < 'A' || char > 'Z')
{
}

the above code is just an example. it wouldn't work just yet, but if you alter it correctly you should be able to get it working smile.gif


This might sound obvious, but Im an absolute begginner, which parts do i change and also what does the 32 stand for?

Thanks =]
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