klimi
But I would prefer going Google way
klimi
C book will take ages
Sagar
Ok..is anyone here who knows c?
klimi
You should be able to do it them
Mat
What's the question?
klimi
But we're stuck on input
Mat
Mat
Do you know how to calculate a determinant?
Sagar
Theoretically?
klimi
Yep
Sagar
On paper and pen?
klimi
Yes
Sagar
Yes I do
klimi
So you're able to program it
Mat
Yeah, the algorithm behind it
Sagar
I knw all the theoretical parts just dnt knw the language part
Mat
So you know how to elaborate data
klimi
So first part of the solution would be getting input from the user
Sagar
Yes
Mat
You can do a double for loop which takes every number from the user:
Insert element[0][0]: 3
Insert element[0][1]: 5
Insert element[0][2]: 1
...
klimi
You can do a double for loop which takes every number from the user:
Insert element[0][0]: 3
Insert element[0][1]: 5
Insert element[0][2]: 1
...
He doesn't know how to do it dynamicaly
klimi
User will input how big data will be
Mat
He doesn't know how to do it dynamicaly
Insert number of rows: 4
Insert number of columns: 7
Mat
After that input, they'll have fixed number of elements
Sagar
So you are basically saying that I should use scanf with arrays?
Sagar
Hm..but how will I do that? I mean they are two separate things
Sagar
Aren't they?
klimi
Array
klimi
Is just a group of something
klimi
Eg of int or double
Mat
Pseudocode will be something like
Insert rows and columns
Create array w/ given input
for every row i
for every column j
insert array[i][j]
Sagar
Pseudocode will be something like
Insert rows and columns
Create array w/ given input
for every row i
for every column j
insert array[i][j]
Oho..Niw I get the idea..its simple
Sagar
*now
Sagar
Thanks..thanks a lot
Sagar
It was a grt hlp
Mat
If you want to create a better input method, learn how to read files :)
Mat
Then you'll only need to modify the file in order to analyze the matrix
Sagar
If you want to create a better input method, learn how to read files :)
You mean file opeartion?
Sagar
I knw tht a little bit
Mat
You mean file opeartion?
Yeah. The user will modify the file with his matrix and the application will directly do operations
Sagar
Mat
👍
klimi
I don't but I don't have to xD
Anonymous
struct a{char ** b;}
how to printf b ?
Daniele°
struct a{char ** b;}
how to printf b ?
Need size
struct a{char** b; size_t line};
...
struct a z;
...
for(size_t i =0; i<z.line;++i)
printf("[%lu]%s\n",i,z.b[i]);
Mat
Need size
struct a{char** b; size_t line};
...
struct a z;
...
for(size_t i =0; i<z.line;++i)
printf("[%lu]%s\n",i,z.b[i]);
You can use '\0', no need to have a size
Daniele°
You can set to NULL last line
Daniele°
struct a{char** b;};
...
struct a z;
...
for(size_t i =0; z.b[i];++i)
printf("[%lu]%s\n",i,z.b[i]);
Daniele°
Need size
struct a{char** b; size_t line};
...
struct a z;
...
for(size_t i =0; i<z.line;++i)
printf("[%lu]%s\n",i,z.b[i]);
init with:
z.b=malloc(sizeof(char*)*10);
z.line=10;
for(size_t i = 0; i<z.line;++i){
z.b[i]=malloc(sizeof(char)*32);
strcpy(z.b[i],"hello");
}
BinaryByter
init with:
z.b=malloc(sizeof(char*)*10);
z.line=10;
for(size_t i = 0; i<z.line;++i){
z.b[i]=malloc(sizeof(char)*32);
strcpy(z.b[i],"hello");
}
you don't need the size of char pointers
BinaryByter
you need the size of chars
BinaryByter
unless you nede an array of char pointers
BinaryByter
which you don't
BinaryByter
z.b[i]=malloc(sizeof(char)*32);
strcpy(z.b[i],"hello");
BinaryByter
oh whoops you need an array of pointers
BinaryByter
what is your problem?
Daniele°
char** is a pointer to pointer char
Daniele°
i know i know
Begin allocate a space for containing line:
char** b = malloc(sizeof(char*)*NumberOfLine);
Daniele°
Next allocate space for every line
Daniele°
z.b[i]=malloc(sizeof(char)*32);
strcpy(z.b[i],"hello");
BinaryByter
Begin allocate a space for containing line:
char** b = malloc(sizeof(char*)*NumberOfLine);
i know how things work, don't worry