struct help

hi guys

i have so far read a file into buffer

used strtok() to identify each part of the struct

added these into a struct, printed this struct.

read the next values into the struct and so on...

i need to be able to store these structs, in an array maybe or something

that allows me to sort through them


anyideas?

pm or email me if you need the source code to even understand what i just said, i know it doesnt make to much sense, kind of hard to explain.

your thankfully

Techevo

Quote:

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Originally Posted by techevo

i need to be able to store these structs, in an array maybe or something

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You mean like perhaps a struct array?

Code:

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struct example {
      int a;
      char *b;
};
struct example myarray[10];

---

my struct looks like this might be wrong way to do it mind

<code>
typedef struct {
char name[12];
int quantum;
int priority;
} processDetails;

processDetails process;

</code>

and the array would need to possibly be smaller or larger each time, depending on the size of the file, but im not too worried about that.

thanks for your quick reply

techevo

this is the course code in complete

gcc sched.c -o sched

#./sched <filename>

Well, there is a problem on line 103, where you intend to read the data in:

Code:

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token = strtok(NULL, " ");
process.quantum[i] = (int)token;

---

The 2nd line implies that the data was serialized in the file -- in other words, written as an int, not a string representation of a number. Eg, if you wrote the data like this "someword 1234", 1234 is not an int, it is a string.

In any case, strtok does not place the data into an int, it places it into a string. You cannot have actual int data in a string, because an int can contain a zero byte '\0' which terminates the string. It would be impossible to use strtok here anyway, since it reads to some terminating character, which there are no single byte values which are not a part of a legal int. What you could use is something like:

Code:

---

fread(myint, sizeof(int), 1, fp);

---

But I am guessing the numbers are just written into the file as text, right? In that case, you want to use strtol() to place the number into process.quantum. You can't simply cast a string as int to convert the value.

I think maybe you need to explain more specifically the problems you are having, since clearly this was a problem, rather than saying "I am having trouble trying to figure out how to do this" and not mentioning what has gone wrong.