Storing a String with values

Hi

I am having problems with the following.

I am trying to program a mileage chart that reads the names of places and miles from a text file

Once read in will look similar to below.

Hull Wall Stow Ford
Hull 0 21 3 45
Wall 21 0 5 65
Stow 3 87 0 12
Ford 45 65 12 0

I can do this part and have got the chart displaying on screen by using the following code.

Code:

---

void showchart ()
{
int x, row, col;

FILE *in_file;
in_file = fopen("places.txt","r");

for (x=0;x<=9; x++)
{
fscanf(in_file, "%4c", names[x]);
}

printf("\n    ");

for (x=0; x<=9; x++)
{
printf("%6s",names[x]);
}

printf("\n");
for (row=0; row<=9; row++)
{
printf("%s", names[row]);
        for(col=0; col<=9; col++)
{
        fscanf(in_file, "%d", &grid[row][col]);
        printf("%6d", grid[row][col]);
        }
printf("\n");
}
}

---

Now I need to capture the names as a string and also the mile for each name, so I can sort the place names in alphabetical order and it will still display the correct mile in the grid when sorted.

I have an idea of using the gets command to store the name and the miles in a temp array when it is read from the text file, but I am unsure how to do this.

This is the code I have got so far and it doesnt work

Code:

---


#include <stdio.h>
#include <string.h>

char names[10][5];
void read_strings(char s[][5],int n)

int main(void)

{
int x, i, s;

FILE *in_file;
in_file = fopen("places.txt","r");

for (x=0;x<=9; x++)
{
fscanf(in_file, "%4c", names[x]);
}

for (x=0; x<=9; x++)
{
printf("%6s",names[x]);
for (i=0; i<n; i++)
{
gets(char s[][i]);
}
}
printf("\n");
}
}

---

It prints the names on the screen (well it did before I entered the gets(char s[][i]); line) in a list but not the miles as I have not got round to this part yet.
I am first trying just to get it to store the names so I can sort them, then I will try and add the code to store the miles with the names.

I hope this makes sence?

Thanks for any help.

Or can any one suggest an easier way to do this?

Quote:

---

I have an idea of using the gets command to store the name and the miles in a temp array when it is read from the text file, but I am unsure how to do this.

---

Never use gets. LINK Replace it with fgets. LINK

Just an idea but I am not sure if this is what you need. If it will always be the same locations you can use a structure.

Code:

---

struct location{
    int tohull, towall, tostow, toford;
}

---

Then you would have one of these structures and just fill it with info.

Code:

---

struct location Hull;
Hull.tohull = 0;

---

Then you just scan in the numbers with fgets and parse them into the structure.

Code:

---

char line[BUFSIZ], temp[50];
fgets(line, sizeof(line), file);
sscanf(line,"%s %d %d %d %d", temp, &Hull.tohull, &Hull.towall, &Hull.tostow, &Hull.toford);

---

~Sven

Your first link has an unnessesary "</br>" imbedded inside it. :)

Code:

---

gets(char s[][i]);

---

That's not how you pass an argument to a function!

Use something like this:

Code:

---

#include <string.h>
/* ... */
char s[1000], *p;
/* ... */
fgets(s, sizeof(s), stdin);
if((p = strchr(s, '\n'))) *p = 0;
/* now you have a string, s */

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