Code:
char *buff
fishwater00
Last Activity: Jul 9 '08, 09:18 PM
Joined: Jun 17 '08
Location:
-
Thank you. I fix it.
... -
Thanks. it hsould be strncmp.
Do I need to define "buff", if I donot define buff, error message shows "‘buff’ undeclared (first use in this function)". if I define "*buff" as int or float, it will shows the message like:
warning: passing argument 1 of ‘fgets’ from incompatible pointer type
warning: passing argument 2 of ‘mystrcmp’ from incompatible pointer type
...Leave a comment:
-
How to interpret this input problem?
I need to read parameters from a file called "params", the following is part of codes which can read parameters from that file. But I am not totally understand. Hope anyone can give detailed answers. Thanks.
In a file called "params.c"
[code=c]
#include "systems.h" /* it includes all .h codes I need */
int mystrcmp(const char *tag, char *buff)
{
int l =... -
How can I pass value from whole array to sequential array?
I do not know how to express the array I am going to work with, but some codes can describe them.
If I define an array and a struct with member :
[code=c]
float velocity;
MODEL.VELOCITY;
[/code]
VELOCITY in struct MODEL is also float.
then I alocate memory for them;
[code=c]
velocity = malloc( NX*NY*NZ*sizeof (float); /* in 3D case, NX,NY,NZ are the length, here it is original... -
Thanks. I already add * to it, but still have those problem. I think it is the allocation problem.
I wonder if you or anyone can write some codes about allocation of arrays of struct. That would be great.
Thank all in advance....Leave a comment:
-
Thank you. In my case, the struct include many different arrays, such velocity[k], wave1[k], wave2[k], wave3[k], derivatives1[k], derivatives2[k], and so on. every array almost need k=nx*ny*nz*size of(float) memory. But, like you said, I do not know how much memory I need to reserve, and I try to allocate dynamic memory. In other word, In domain[0], domain[1],... each domain[i] includes velocity[k], wave1[k], wave2[k],... All I did is in 3D case....Leave a comment:
-
Segmentation fault--allocation error?
First of all, I need to thank all friends helping me here. Those days I learn a lot from your advices.
The basic idea of my code is to read velocity file into domain[i].velocity[k] seperately.
Start!!!
...Code:typedef struct {int nx, ny, nz; float *velocity; } void a(Model *domain, int i); void init(Model *domain, int steps); void main() {int i, j; int -
I modified my codes like you said, it works now. Thank you very much....Leave a comment:
-
Thanks. What do you mean "calling method"?
If I call function "a( )" from main, I can use
It should be right, isnt it?...Code:void a(Model *domain, int t) /* domain is the name of struct */
Leave a comment:
-
error: incompatible types in assignment
Question 1:
...Code:typedef struct { int x, y, z ; float *wave; float *velocity; }Model; void a(Model *domain); void b(Model *domain, int t); int main() {int i; int j=10; Model Domain; Domain=(Model *)malloc(sizeof(Model); for (i=0; i<10; i++) a(domain); return; -
Thank you. I use gcc to compile it ( I call it "try.c":
[code=c]
typedef struct
{int x, int y, int z;
short *velocity ;
float *wave ;
}Modeldim;
void a(Modeldim *domain) ;
void b(Modeldim *domain, int k) ;
void c(Modeldim *domain, int k);
int main()
{ int STEPS=10;
int first = 10;
Modeldim Domain;
Domain...Leave a comment:
-
Great! Thanks a lot.
Another question is about memory allocation.
If I don't use struct, just define like:
[code=c]
float velocity, wave ;
[/code]
I need to allocate dynamic memory for them:
[code=c]
velocity = my_malloc(NX, NY, NZ, sizeof(float)) ;
wave = my_malloc((NX, NY, NZ, sizeof(float)) ;
/* my_malloc is a function which...Leave a comment:
-
Thanks. I modified my codes and paste here:
[code=c]
typedef struct
{ int x, int y, int z;
short *velocity ;
float *wave ;
}Modeldim;
void a(Modeldim *domain) ;
void b(Modeldim *domain, int k) ;
void c(Modeldim *domain, int k);
int main()
{ int STEPS=10;
int first = 10;
Modeldim Domain;
Domain = (Modeldim...Leave a comment:
-
Thank you. I am going to test it.
So far I want to figure out my struct problem:
May I call the parameters of array which are included in "hisfunc" and "herfunc" in main after I define parameters in "myfunction(arr ay)"? Does it has some "gramma" errors?Leave a comment:
-
I haven't tried to compile it. It is just a part of my whole codes. So I have to figure out this problem and move further.
Thanks.Leave a comment:
-
Thank you. I am still confused about the struct.
[code=c]
typedef struct
{ int x;
int y;
int z;
} Modeldim ;
void myfunction(Mode ldim *submodel)
int main()
{
int x,y,z;
Modeldim array[100];
myfunction(Mode ldim &array);
for (i=0; i<3; i++)
{
hisfunc(arr...Leave a comment:
-
How to call the function including arrays of structure in main.c?
First of all, thanks!
I have a problem about the arrays of structure in C, the following is my codes:
#include "system.h"
typedef struct
{ int x, int y, int z;
short *velocity ;
float *wave ;
} Modeldim ;
void myfunction(Mode ldim *submodel) ;
int main(int argc, char *argv[])
{
int X=Y=Z=1000;
int i,j,k;...
No activity results to display
Leave a comment: