Thread: The powers (that be)

  1. #1
    Registered User
    Join Date
    Apr 2007
    Posts
    1

    powers

    I wrote a program to multiply any floating point number by any integer either positive or negative:

    insert
    Code:
    int main()
    {
        int count, y, finish;
        float x, z;
        
        while(finish!=0)
        {
        printf("Enter base number\n");
        scanf("%f", &x);
        printf("Enter power number\n");
        scanf("%d", &y);
        
    if (y>0)     
    {    
        z=1;
        for(count=1;count<=y;count++)
        {
         z=z*x;
        }
    }    
    
    else;
    {
        z=1;
        for(count=-1;count>=y;count--)
        {
         z=z*x;
        }
    }
    
    printf("Answer = %f\n", z);
    printf("Enter 0 to quit\n");
    scanf("%d", &finish);
    }
    }
    Every time it prints the answer as 1.00000 and i dont know why

  2. #2
    Deathray Engineer MacGyver's Avatar
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    Probably because of the ; after else.

    FYI, it's not nice to hijack other people's threads to ask unrelated questions.

  3. #3
    and the hat of int overfl Salem's Avatar
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    Split from the hijacked thread.
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.

  4. #4
    Frequently Quite Prolix dwks's Avatar
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    BTW, fabs() from math.h might make your program simpler.
    dwk

    Seek and ye shall find. quaere et invenies.

    "Simplicity does not precede complexity, but follows it." -- Alan Perlis
    "Testing can only prove the presence of bugs, not their absence." -- Edsger Dijkstra
    "The only real mistake is the one from which we learn nothing." -- John Powell


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  5. #5
    Registered User
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    And pow() might make it even simpler. That might be carrying it a bit too far though.

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