writing number 10 to files

i am pretty new to c programming, i have been playing with writing to files, just for messing around, i wrote a program to write 3 "points" to a file. everything works, except for the number 10, when it writes the number 10, it writes 0D 0A, instead of just 0A, it then screws up the read order or something too.

Code:

---

#include <stdio.h>


void main()
{
    int counter = 0;
    FILE *filevariable;
    int temp;

   
    filevariable = fopen("testfile", "w");
   
    printf("enter x ; y ; z \n");
    printf("[[max is signed 32 bit]]\n");
    //have the user type "exit" to leave
      while(temp != 1)
{
      counter++;
      fseek(filevariable,12*counter-8,SEEK_SET);
      printf(" POINT # %d\n", counter);
    scanf("%d", &temp);
    if(temp == 10) printf("10 entered");
    fwrite(&temp, 4, 1, filevariable);
    scanf("%d", &temp);
    fwrite(&temp, 4, 1, filevariable);
    scanf("%d", &temp);
    fwrite(&temp, 4, 1, filevariable);
    printf("\n\n");
    temp = counter*3;
    fseek(filevariable,0,SEEK_SET);
    fwrite(&temp, 4, 1, filevariable);
    printf("points saved!\n\n");
    }
    fclose(filevariable);
   

}

---

Before I start delving deep within logical mess, there are some things that you should fix:

>void main()
In C Programming we use:
int main( void )
http://faq.cprogramming.com/cgi-bin/...&id=1043284376

>???
Always return 0 after being complete with main!

Here's what you shall be using from now on for every C Program you create:

Code:

---

#include <stdio.h>

int main( void )
{
    puts( "Hello world" );
    return 0;
}

---

you can use fprintf to write the numbers to the file

Code:

---


 fprintf(stream,"%d %d %d",num1,num2,num3);

---

try that to put the numbers to the file..

> except for the number 10, when it writes the number 10, it writes 0D 0A, instead of just 0A
You need to open the file in binary mode - "wb", not "w"

wow thanks a bunch everyone!

i love being a newbie, problems when u are still a newb at a certain programming language are always solved so easily.

thanks again,
variable

thought id repost the finished code for all to see.

Code:

---

#include <stdio.h>

int main(void)
{
    int counter = 0;
    FILE *filevariable;
    int temp;
   
    filevariable = fopen("testfile", "wb");
   
    printf("enter x ; y ; z \n");
    printf("[[max is signed 32 bit]]\n");
    //have the user type "exit" to leave
      while(temp != 1)
{
      counter++;
      fseek(filevariable,12*counter-8,SEEK_SET);
      printf(" POINT # %d\n", counter);
    scanf("%d", &temp);
    fwrite(&temp, 4, 1, filevariable);
    scanf("%d", &temp);
    fwrite(&temp, 4, 1, filevariable);
    scanf("%d", &temp);
    fwrite(&temp, 4, 1, filevariable);
    printf("\n\n");
    temp = counter*3;
    fseek(filevariable,0,SEEK_SET);
    fwrite(&temp, 4, 1, filevariable);
    printf("points saved!\n\n");
    }
    fclose(filevariable);
   
    return 0;
   

}

---

++ just out of curiosity, why would every number but 10 work?

Quote:

---

Originally Posted by variable

++ just out of curiosity, why would every number but 10 work?

---

It happens to be a value that gets translated in text mode.

ah thanks