Thread: Help with field index!

I need to put numbers from fieldA to even indexes of fieldC, and numbers from fieldB to uneven indexes of fieldC. Im just going in circles, need some hints! I filled up fieldC with nums from A and B but dont know how to sort them like this.

need this: 1. fieldA, 2. fieldB, 3.fieldA, 4. fieldB...

I have an array of 10 elements. I created it from an 2 arrays of 5 elements each. I have array 'A' which is filled up with elements from arrays 'B' and 'C'.

A1.B1
A2.B2
A3.B3
A4.B4
A5.B5
A6.C1
A7.C2
A8.C3
A9.C4
A10.C5
And I need array 'A' to have array 'B' on its even indices and array 'C' on its uneven indices.


A1.C1
A2.B1
A3.C2
A4.B2.....

Code:

#include <stdio.h>

#define N 5

int main()

{
	int sranje;
	int prvi[N];
	int drugi[N];
	int a;

	for(a=0;a<N;a++)
	{
		printf("%d. = ",a+1);
		scanf("%d", &prvi[a]);
	}

	printf("\n");

		for(a=0;a<N;a++)
	{
		printf("%d. = ",a+1);
		scanf("%d", &drugi[a]);
	}

		function(prvi, drugi);

	scanf("%d", &sranje);

}

int function(int prvi[N], int drugi[N])
{
	int *treci, M,a,k=0;
	M=N+N;

	treci=((int*)malloc(sizeof(int)*(M)));

	for(a=0;a<N;a++)
	{
		treci[k]=prvi[a];
		k++;
	}
	for(a=0;a<N;a++)
	{
		treci[k]=drugi[a];
		k++;
	}

	for(a=0;a<M;a++)
	{
		printf("\n%d. = %d", a+1, treci[a]);
	}
	
}

I have this...

i tried

Code:

for(a=0;a<N;a++)
	{
		if(a%2==0)
		{
		treci[k]=prvi[a];
		}
		k++;
		
	}

, or putting

Code:

for(a=0;a<N;a++)
	{
		treci[k]=prvi[a];
		k++;
a++;
	}

to skip one extra number but nothing, I think it shoul be there somewhere..

Code:

#include <stdio.h>
#include <string.h>
int main()

{
	int sranje;
	int prvi[]={'2','2','2'};
	int drugi[]={'5','5','5'};
	int *pp,a,*pd,*pt;
	int treci[6];
	pp=prvi;
	pd=drugi;
	pt=treci;
		
		for(a=0;a<3;a++)
		{
			printf("%3d", pp[a]);
		}
		printf("\n");
		for(a=0;a<3;a++)
		{
			printf("%3d", pd[a]);
		}
		for(a=0;a<6;a++)
		{
			pt=pp;
			pt++;
			pt=pd;
		}
		for(a=0;a<6;a++)
		{
			printf("\n %d.= %d",a+1, pt[a]);
		}

	scanf("%d", &sranje);
}

or something like, this, but it gives me strange output....50,53...

Code:

	for(a=0;a<6;a++)
		{
			for(b=0;b<3;b++)
			{
				pt[a]=pp[b];
				
			}
			a++;
			
		}

now, i managed to put pp into pt in every other element, still need to put pd in.

Code:

#include <stdio.h>
#include <string.h>
int main()

{
	int sranje;
	int prvi[]={'2','2','2'};
	int drugi[]={'5','5','5'};
	int *pp,a,*pd,*pt,b;
	int treci[6];
	pp=prvi;
	pd=drugi;
	pt=treci;
		
		for(a=0;a<3;a++)
		{
			printf("%3d", pp[a]);
		}
		printf("\n");
		for(a=0;a<3;a++)
		{
			printf("%3d", pd[a]);
		}
		for(a=0;a<6;a++)
		{
			for(b=0;b<3;b++)
			{
				pt[a]=pp[b];
				
			}
			a++;
		}
			for(a=1;a<6;a++)
		{
			for(b=0;b<3;b++)
			{
				pt[a]=pd[b];
				
			}
			a++;
		}
			for(a=0;a<6;a++)
		{
			printf("\n %d.= %d",a+1, pt[a]);
		}

	scanf("%d", &sranje);
}

I did it!!!! HURA!!!!!!!