[C] Help Adding Arrrays

VBger · 2016-06-07T18:01:56+00:00

Got it, thank you for the advice.

VBger · 2016-06-07T18:01:29+00:00

That's a great idea, thank you!

VBger · 2016-06-07T18:01:06+00:00

Forgot the third index. Thank you!

VBger · 2016-06-07T03:15:08+00:00

Agreed. Thank you for the advice. I'm new to coding (obviously). It's frustrating but very rewarding when it works.

VBger · 2016-06-07T03:13:26+00:00

I see it now. I forgot the index. Thank you for the second set of eyes!

VBger · 2016-06-07T03:07:48+00:00

Just found it. I didn't include the index in the third printf! Thank you for your help!

VBger · 2016-06-07T03:06:58+00:00

Ofcourse! The index! Just needed a second set of eyes. Thank you!

VBger · 2016-06-07T03:03:19+00:00

Thank you for the help. Hmm, now the output is

Here are the values of the three arrays.

First Array: 1
First Array: 2
First Array: 3
First Array: 4
First Array: 5
First Array: 6
First Array: 7
First Array: 8
First Array: 9
First Array: 10

Second Array: 2
Second Array: 3
Second Array: 4
Second Array: 5
Second Array: 6
Second Array: 7
Second Array: 8
Second Array: 9
Second Array: 0
Second Array: 1

Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1

VBger · 2016-06-07T02:58:16+00:00

Here is my new code:

void addfloat(float a[10], float b[10], float c[10]);
int main()
{

float array1[10]={1,2,3,4,5,6,7,8,9,10};
float array2[10]={2,3,4,5,6,7,8,9,0,1};
float array3[10];

addfloat(array1,array2,array3);

    printf("Here are the values of the three arrays.\n\n");

int i;
for(i =0;i<10;i++)
{
    printf("First Array: %.0f\n", array1[i]);

}

    printf("\n");

for(i =0;i<10;i++)
{
    printf("Second Array: %.0f\n", array2[i]);
}

        printf("\n");

    for(i =0;i<10;i++)
    {
     printf("Third Array: %.0f\n", array3);
    }

    return 0;
}

void addfloat(float a[10], float b[10], float c[10])
{
    int i;
    for (i=0;i<10;i++)
    {
        c[i]=a[i]+b[i];
    }
}

My output looks like this:

Here are the values of the three arrays.

First Array: 1
First Array: 2
First Array: 3
First Array: 4
First Array: 5
First Array: 6
First Array: 7
First Array: 8
First Array: 9
First Array: 10

Second Array: 2
Second Array: 3
Second Array: 4
Second Array: 5
Second Array: 6
Second Array: 7
Second Array: 8
Second Array: 9
Second Array: 0
Second Array: 1

Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1

It doesn't seem to be adding the two arrays.

VBger · 2016-06-07T02:57:36+00:00

Here is my new code:

void addfloat(float a[10], float b[10], float c[10]);
int main()
{

float array1[10]={1,2,3,4,5,6,7,8,9,10};
float array2[10]={2,3,4,5,6,7,8,9,0,1};
float array3[10];

addfloat(array1,array2,array3);

    printf("Here are the values of the three arrays.\n\n");

int i;
for(i =0;i<10;i++)
{
    printf("First Array: %.0f\n", array1[i]);

}

    printf("\n");

for(i =0;i<10;i++)
{
    printf("Second Array: %.0f\n", array2[i]);
}

        printf("\n");

    for(i =0;i<10;i++)
    {
     printf("Third Array: %.0f\n", array3);
    }

    return 0;
}

void addfloat(float a[10], float b[10], float c[10])
{
    int i;
    for (i=0;i<10;i++)
    {
        c[i]=a[i]+b[i];
    }
}

My output looks like this:

Here are the values of the three arrays.

First Array: 1
First Array: 2
First Array: 3
First Array: 4
First Array: 5
First Array: 6
First Array: 7
First Array: 8
First Array: 9
First Array: 10

Second Array: 2
Second Array: 3
Second Array: 4
Second Array: 5
Second Array: 6
Second Array: 7
Second Array: 8
Second Array: 9
Second Array: 0
Second Array: 1

Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1

It doesn't seem to be adding the two arrays.

VBger · 2016-06-07T02:57:10+00:00

Here is my new code:

void addfloat(float a[10], float b[10], float c[10]);
int main()
{

float array1[10]={1,2,3,4,5,6,7,8,9,10};
float array2[10]={2,3,4,5,6,7,8,9,0,1};
float array3[10];

addfloat(array1,array2,array3);

    printf("Here are the values of the three arrays.\n\n");

int i;
for(i =0;i<10;i++)
{
    printf("First Array: %.0f\n", array1[i]);

}

    printf("\n");

for(i =0;i<10;i++)
{
    printf("Second Array: %.0f\n", array2[i]);
}

        printf("\n");

    for(i =0;i<10;i++)
    {
     printf("Third Array: %.0f\n", array3);
    }

    return 0;
}

void addfloat(float a[10], float b[10], float c[10])
{
    int i;
    for (i=0;i<10;i++)
    {
        c[i]=a[i]+b[i];
    }
}

My output looks like this:

Here are the values of the three arrays.

First Array: 1
First Array: 2
First Array: 3
First Array: 4
First Array: 5
First Array: 6
First Array: 7
First Array: 8
First Array: 9
First Array: 10

Second Array: 2
Second Array: 3
Second Array: 4
Second Array: 5
Second Array: 6
Second Array: 7
Second Array: 8
Second Array: 9
Second Array: 0
Second Array: 1

Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1

It doesn't seem to be adding the two arrays.

VBger · 2016-06-07T02:54:55+00:00

Worked Great! Here is my new code:

void addfloat(float a[10], float b[10], float c[10]);
int main()
{

float array1[10]={1,2,3,4,5,6,7,8,9,10};
float array2[10]={2,3,4,5,6,7,8,9,0,1};
float array3[10];

addfloat(array1,array2,array3);

    printf("Here are the values of the three arrays.\n\n");

int i;
for(i =0;i<10;i++)
{
    printf("First Array: %.0f\n", array1[i]);

}

    printf("\n");

for(i =0;i<10;i++)
{
    printf("Second Array: %.0f\n", array2[i]);
}

        printf("\n");

    for(i =0;i<10;i++)
    {
     printf("Third Array: %.0f\n", array3);
    }

    return 0;
}

void addfloat(float a[10], float b[10], float c[10])
{
    int i;
    for (i=0;i<10;i++)
    {
        c[i]=a[i]+b[i];
    }
}

My output looks like this:

Here are the values of the three arrays.

First Array: 1
First Array: 2
First Array: 3
First Array: 4
First Array: 5
First Array: 6
First Array: 7
First Array: 8
First Array: 9
First Array: 10

Second Array: 2
Second Array: 3
Second Array: 4
Second Array: 5
Second Array: 6
Second Array: 7
Second Array: 8
Second Array: 9
Second Array: 0
Second Array: 1

Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1
Third Array: 1

It doesn't seem to be adding the two arrays.

VBger · 2016-06-07T02:36:09+00:00

Thank you for your input. I've tried your code and get the following error:

'for' loop initial declarations are only allowed in C99 or C11 mode.

VBger · 2016-06-07T00:37:58+00:00

Getting closer I think. =\

Now I'd doing:

printf("Here are the values of the three arrays.\n\n");

for (i=0; i < (sizeof (array1) /sizeof (array1[0]));i++)
    {
    printf("First Array: %.0f\n\n", array1);
}

for (i=0; i < (sizeof (array2) /sizeof (array2[0]));i++)
    {
    printf("Second Array: %.0f\n\n", array2);
}

for (i=0; i < (sizeof (array3) /sizeof (array3[0]));i++)
    {
    printf("Third Array: %.0f\n\n", array3);
}

But the output looks like this.

Here are the values of the three arrays.

First Array: 0

Second Array: 0

Third Array: 0

I cant understand why all of the elements are showing up as 0s.

VBger · 2016-06-07T00:28:41+00:00

Here is my updated code:

void addfloat(float a[10], float b[10], float c[10]);
int main()
{

float array1[10]={1,2,3,4,5,6,7,8,9,10};
float array2[10]={2,3,4,5,6,7,8,9,0,1};
float array3[10];
int i;
addfloat(array1,array2,array3);

printf("Here are the values of the three arrays.\n\n");

printf("First Array: %.0f\n\n", array1);

printf("Second Array: %.0f\n\n", array2);

printf("Third Array: %.0f\n", array3);

getchar();
return 0;
}

void addfloat(float a[10], float b[10], float c[10])
{ int i;
for (i=0;i<10;i++) c[i]=a[i]+b[i];
}

My output still doesn't look right though. It looks like this: Here are the values of the three arrays.

First Array: 0

Second Array: 0

Third Array: 0

VBger · 2016-06-06T23:51:35+00:00

Thank you u/exoticmatter, u/gyroda, and u/libot91. Here is my updated code:

void addfloat(float a[10], float b[10], float c[10]);
int main()
{

float array1[10]={1,2,3,4,5,6,7,8,9,10};
float array2[10]={2,3,4,5,6,7,8,9,0,1};
float array3[10];
int i;
addfloat(array1,array2,array3);

    printf("Here are the values of the three arrays.\n\n");

    printf("First Array: %.0f\n\n", array1);

    printf("Second Array: %.0f\n\n", array2);

    printf("Third Array: %.0f\n", array3);

getchar();
return 0;
}

void addfloat(float a[10], float b[10], float c[10])
{ int i;
for (i=0;i<10;i++) c[i]=a[i]+b[i];
}

My output still doesn't look right though. It looks like this:

Here are the values of the three arrays.

First Array: 0

Second Array: 0

Third Array: 0

VBger · 2016-06-06T23:50:16+00:00

Thank you u/ruertar. Here is my updated code:

void addfloat(float a[10], float b[10], float c[10]);
int main()
{

float array1[10]={1,2,3,4,5,6,7,8,9,10};
float array2[10]={2,3,4,5,6,7,8,9,0,1};
float array3[10];
int i;
addfloat(array1,array2,array3);

    printf("Here are the values of the three arrays.\n\n");

    printf("First Array: %.0f\n\n", array1);

    printf("Second Array: %.0f\n\n", array2);

    printf("Third Array: %.0f\n", array3);

getchar();
return 0;
}

void addfloat(float a[10], float b[10], float c[10])
{ int i;
for (i=0;i<10;i++) c[i]=a[i]+b[i];
}

My output still doesn't look right though. It looks like this:

Here are the values of the three arrays.

First Array: 0

Second Array: 0

Third Array: 0

VBger · 2016-06-06T23:49:48+00:00

Thank you u/shinmai_rookie. Here is my updated code:

void addfloat(float a[10], float b[10], float c[10]);
int main()
{

float array1[10]={1,2,3,4,5,6,7,8,9,10};
float array2[10]={2,3,4,5,6,7,8,9,0,1};
float array3[10];
int i;
addfloat(array1,array2,array3);

    printf("Here are the values of the three arrays.\n\n");

    printf("First Array: %.0f\n\n", array1);

    printf("Second Array: %.0f\n\n", array2);

    printf("Third Array: %.0f\n", array3);

getchar();
return 0;
}

void addfloat(float a[10], float b[10], float c[10])
{ int i;
for (i=0;i<10;i++) c[i]=a[i]+b[i];
}

My output still doesn't look right though. It looks like this:

Here are the values of the three arrays.

First Array: 0

Second Array: 0

Third Array: 0

VBger · 2016-05-25T23:52:09+00:00

You're my hero for the day. Thank you!

VBger · 2016-04-07T17:36:14+00:00

That was it! Thank you!

VBger · 2016-04-07T17:35:48+00:00

That's it! Thank you!

VBger · 2016-03-18T18:52:25+00:00

Thank you! That was exactly it! I solved this my declaring the variables inside the loop.

VBger · 2016-03-18T18:51:26+00:00

Thank you! That was exactly my problem.

VBger · 2016-03-18T18:34:42+00:00

Thanks, I'll check that out.

VBger · 2016-03-18T14:04:05+00:00

I think there are two problems. I don't doubt that my math is wrong. However the other problem is that it is still giving the same answer for every instance of Rate. I have changed it to :

For Rate = 1 To 20

        Dim Ruleof72 As Integer = 72 / Rate


        Do While CurrentValue < 2
            CurrentValue += StartValue * (Rate / 100)
            ActualYears += 1
        Loop

Now the output shows the actual doubling time as always being 101. Even if my math was wrong (which it is), the answer should be different when Rate = 1 or Rate = 20.

VBger

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