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    Homework Help...?


    Hello, I'm a beginner to the C language. Today, I got assigned homework, and I need help. Below are the questions and what I got (but I do not think it is right):

    1) Write a C statement which will set a to 1 if at least two of the three integer variables x, y, z are true (i.e. if any two or all three are true).
    I know it's an if/else statement, but I don't understand what to put (like how to write it so that just 2 or all 3 variables need to be true for a to equal 1).

    2) Write a C statement to perform the following operation: if x is between -3.0 and 2.0 inclusive, set y equal to x, otherwise set y to zero.
    Code:
    if (-3.0 <= x <=2.0) y = x;
    else y = 0;
    3) Given the initialization: double z1 = 1.0, z2 = z1/2; use z1,z2 as a two-point sliding window (i.e. z1=z2; z2=z1/2; slides the window) and write a loop to find the value of z1 such that 1 + z1 is greater than 1 but 1 + z2 is equal to 1.
    No clue how to solve it.

    4) How many times is the body of the following loop executed?
    Code:
    int i, x=0;  
    for( i = 0; i < 11; i += 3) 
    { x += i; }
    I put 5. My rationale is that it'll print 0, 3, 6, 9, and 12 (it'll add 3 to 9 because 9 is less than 11; after 12 the statement is invalid). Is this right?

    5) Write a for statement using integer counter i which will print the integer values starting at 0 and ending with 44.
    Code:
    int i; for(i = 0; i <= 44; ++i)
    { printf( "%i \n" , i); }

    Can anyone help? I really want to learn this language. Help is much appreciated!
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    I haz teh codez!
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    This is a sig, and not necessarily a comment on the OP:
    Please don't be a help vampire!
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    Yeah, I posted it here to see if I can get more replies.
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    5)
    Did you test it? ;)

    2)
    You cannot write it like this, you have to separate the condition:
    Code:
    if (-3.0 <= x && x <=2.0) y = x;
    else y = 0;
    4)
    almost correct: it will do the condition validation with i being 12, but the body of the loop will not be executed as 12 is not lower than 11.

    3)
    Sounds like you will have to use a loop,
    Not sure if you have the question correct, but if it is, I strongly suggest you try look at it at the "opposite" direction:
    Which value will z2 have to make 1+z2 equal to 1?
    What value will z1 have to give the correct z2?
    what will the value of 1+z1 be?
    How does this match against the rule that 1+z1 should be greater than 1?

    1)
    how is the integers classified as true? as 1 or non-zero?
    But you should be able do it with if similar to the code from 2).
    Using 1 as true:
    [code]
    if(x==1 & y == 1) {

    } else if (..) {

    }
    [code]
    You will then have to find all the combination that will set a=1.

    if integers is true for all non-zero value, you wil have to look for "not 0" value.
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    1) I don't really understand the process.

    2) Got it! :)

    3) Not sure where to start with the loop.

    4) Is it 4? I ran the program and got 0, 3, 6, and 9.

    5) Got it! :)
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    @TParker

    In addition, for future reference, the following free online book may be helpful

    http://publications.gbdirect.co.uk/c_book/the_c_book.pdf


    Regards,
    Dariyoosh

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