how to convert decimal number to ASCII code?

This is a discussion on how to convert decimal number to ASCII code? within the C Programming forums, part of the General Programming Boards category; Hi all, can anyone help me. I need to convert decimal number to ASCII code. AS i am currently working ...

  1. #1
    oie
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    how to convert decimal number to ASCII code?

    Hi all, can anyone help me. I need to convert decimal number to ASCII code. AS i am currently working on a project than require me to display my result onto a LCD display. As LCD display is using ASCII code to display. Anyone know please help me. THANKSSSsss...

  2. #2
    ATH0 quzah's Avatar
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    You mean like entering a number and displaying the appropriate letter or character? Why do you need to convert anything?
    Code:
    printf("%c", 100 );
    Just display it appropriately.

    Quzah.
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  3. #3
    MFC killed my cat! manutd's Avatar
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    What exactly is your question? Do you need to convert a decimal to its ASCII equivalent (12.1 to the string 12.1)? Or do you want to convert 12.1 into 0C2E01?
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  4. #4
    Frequently Quite Prolix dwks's Avatar
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    I think the OP wants to change
    Code:
    int x = 123;
    into
    Code:
    "123"
    In which case, see the FAQ: http://faq.cprogramming.com/cgi-bin/...&id=1043284385

    For the other way around, "123" -> 123: http://faq.cprogramming.com/cgi-bin/...&id=1043284385
    dwk

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  5. #5
    MFC killed my cat! manutd's Avatar
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    Try this:
    Code:
    int x = 123;
    char buf [3];
    itoa(x,buf,10);
    printf(buf);
    Be careful, however, as this is nonstandard.
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  6. #6
    Cat without Hat CornedBee's Avatar
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    And overflows. You forgot space for the NUL.
    All the buzzt!
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  7. #7
    MFC killed my cat! manutd's Avatar
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    hehe. Whoops.
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  8. #8
    oie
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    I am using a microcontroller to do my project. The result i get from the microcontroller is in float and i need to get my result to be display in a LCD. I do not have a decoder connect to it. That why i need to write a program in C that will able to convert the float into ASCII code.

    For example if the result i get from my microC is 123.45. I want the LCD to display 123.45 also and not any other junk symbol. Without convert the float into ASCII it will display the result into a junk symbol. As LCD only able to recognize ASCII code. Anyone get i trying to do??

  9. #9
    ATH0 quzah's Avatar
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    So why don't you just use printf?


    Quzah.
    Hope is the first step on the road to disappointment.

  10. #10
    oie
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    printf does not work.

  11. #11
    ATH0 quzah's Avatar
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    Why? How? Don't just say "doesn't work". Why doesn't it work? What forms of output are you allowed? Fine. Use sprintf, and use putchar or whatever your output function is.


    Quzah.
    Hope is the first step on the road to disappointment.

  12. #12
    and the hat of wrongness Salem's Avatar
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    So use sprintf() if you want to convert it to a string.

    Or write some really funky code (like what the internals of sprintf does) to convert the float into a string yourself.

    Have you ever tried to convert an integer into a string using /10 and %10 operations in a loop? Well it's a bit like that.
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