Thread: Series of C problems

Originally Posted by OctavianC

Code:

#include <stdio.h>
#include <math.h>
int main()
{
    float a, b, GM;
    printf("Insert the two numbers for the geometrical mean\n");
    scanf("%f", &a);
    scanf("%f", &b);
    GM = sqrt(a*b);
    printf(" The geometrical mean of %f and %f is %f\n", a, b, GM);
}

Looks good at least for a beginner.

Originally Posted by Aslaville

Looks good at least for a beginner.

Thank you. Told you I'm a fast learner .

Originally Posted by laserlight

This is the kind of problem that you can ask about here, i.e., post your code and the resulting error messages from your compiler. Or, if your program compiles but has a bug, post your code, input, expected output and actual output.

Ok, thank you, I will be constantly posting here in the following week.

Originally Posted by Aslaville

With this problems the only thing I could tell you to do is (Friday is a week off )

Well, I am hoping you left out the details since you were too lazy to type

Actually, that's exactly how she sent us the e-mail . I just copied and pasted it.

*Note: When my teacher says "vector" she actually means "Array".

Good morning!

I have this code for union of two arrays:

Code:

#include<stdio.h>
#include<conio.h>
void main()
{
    int A[10], B[10], C[10], i, j, k = 0, n, m, flag = 0;
    printf("How many elements does array A have?\n");
    scanf("%d", &n);
    printf("Please enter the elements of array A\n");
    for (i = 0; i<n; i++)
    {
        scanf("%d", &A[i]);
    }
    printf("How many elements does array B have?\n");
    scanf("%d", &m);
    printf("Please enter the elements of array B\n");
    for (j = 0; j<m; j++)
    {
        scanf("%d", &B[j]);
    }
    for (i = 0; i<n; i++)
    {
        C[k] = A[i];
        k++;
    }
    for (i = 0; i<n; i++)
    {
        flag = 0;
        for (j = 0; j<m; j++)
        {
            if (B[i] == C[j])
            {
                flag = 1;
                break;
            }
        }
        if (flag == 0)
        {
            C[k] = B[i];
            k++;
        }
    }
    printf("\n The union of A and B is:\n");
    for (i = 0; i<k; i++)
    {
        printf("%d", C[i]);
    }
    getch();
}

The problem is as follows: The program runs, but when I give for example 2 elements in A: 1 and 2, and 3 elements in B: 2, 3 and 4 it returns the union as 123, when it should be 1234. Where did I go wrong? Also, how exactly does "flag" work?

I modified it a bit and it's working with 4 elements but when i give A: 1 2 3 and B: 1 2 3 4 5 it shows up as Union: 1 2 3 4

Originally Posted by laserlight

What is your current code?

By the way, in the future it would be best to start a new thread for a new topic.

I found a solution, thank you.