I am writing a program to modify fractions: reducing, adding, converting to/from strings. I am not looking for the assignment to be done for me, I am looking for help with it.

If you can help, please PM me. I will donate FG to those that help. Thanks

i recommend you post what your problem is.

We are using multi-dimensional arrays to house the fractions..so something like: complete the following code (that will reduce a fraction)

int gcd(int a, int b )
{
if (a == 0 && b == 0) {
printf("Illegal args to gcd: %d, %d\n",a,b);
exit(1);
}
int aa = abs(a);
int bb = abs(b);
if (aa == 0)
return bb;
if (bb == 0)
return aa;
return gcd(bb,aa%bb);
}

void reduce_fraction(Fraction *R)
{

}

This post was edited by SleepyUnit on Nov 30 2013 01:46pm

i dont see a single multidimensional array...whats your strategy? what are you going to do with the arrays?

The pointer will be pointing to the array. It will be something like

int A[ ] [ 1 ] = { {3,6}, {4,5}};

So the fractions would be 3/6 and 4/5.

what exactly are you having problems with? converting the array to a Fraction struct or reducing a Fraction struct?

I suppose that the arrays had nothing to do with this, he just teaches very confusing.

So I should have all of my reducing + addition + comparing fractions functions working.

I just need to figure out how to finish the two following functions (and I believe I use sscanf - but i've never used it before):

Fraction string_to_fraction(const char *S)
{
Fraction result = {0,1};
return result;
}

void fraction_to_string(Fraction R,char repr[])
{
repr[0] = 0;
return answer;
}

I have everything running, but I get the wrong result when I try to test Function string_to_fraction. Any ideas on why? Thanks.

typedef struct fraction {
int numer;
int denom;
} Fraction;

Fraction string_to_fraction(const char *S)
{
int n, d;
sscanf(S, "%d/%d", &n, &d);

Fraction result = {n,d};
return result;
}


String to Fraction Errors:
expected: 5/1
actual: 5/-4
expected: 10/1
actual: 10/-4

This post was edited by SleepyUnit on Dec 2 2013 07:37pm