character substring

**Shawty** · 11-14-2002

Ok... I know how to get a substring using the variable type "string," BUT... how do I get a substring of an array of characters.

For instance, if I have a character array of size 9, how do I pull out the first 4 characters?

I've tried:

Code:

char temp1[9] = "temporary";
char temp2[4];

   strcpy (temp2 , temp1);

but that just resizes the size of "temp2" instead of filling up the array with as many characters as it can and then stopping. "strcat" didn't work either! I just need the first 4 characters assigned to their own variable. I'm only asking the user for input once. I know its probably something simple. Please help if you can... thanks!

**Sebastiani** · 11-14-2002

strncpy copys up to N chars. Still you should null terminate manually...

Code:

 char str[100] = "temporary";

 char sub[100];

 strncpy(sub, str, 4);

 sub[4] = 0;

 printf("Sub: %s", sub);

 //...now try from the middle...

 char * found = strstr(str, "mp");

  if(found){
   strncpy(sub, found, 4);
   sub[4] = 0;
   printf("Sub: %s", sub);
   }

**Shawty** · 11-14-2002

I saw that function and didn't look twice at it. Thank you so much!

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