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finding specific char substring

I need a function to search for specific text in a string.

I tried:
if (instr(line, "hello") != 0 ) /* line is a string of type char */

but I keep getting an unresolved error at compile.

If I am doing something wrong with this function...please let me know.

If you could also provide other means of doing this it would be much appreciated.

Thanks

ASKER CERTIFIED SOLUTION

jkr

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van_dy

consider the following function:

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

int getindex(line, string)
      char *line;
      char *mystring;
{
      int i;
      int slen = strlen(mystring);
      int llen = strlen(line);

      for(i = 0; i < llen; i++){
            if(!strncmp(line + i, mystring, slen))
                  return i;
      }

      return -1;
}

int main()
{
      char *line = "My name is XYZ";
      char *string = "XYZ";
      printf("%d\n", getindex(line, string));
      return 0;
}

getindex returns the index in the line string, where the string mystring appears first.

hope this helps,
van_dy

van_dy

the documentation for instr() tells its a curses function, used for extracting string of characters
starting from the current cursor position in a named window. i think you are using the wrong
function, the resolve error comes because you arent linking in the curses library.

van_dy

errata:

int the definition of getindex we should have ..

int getindex(line, mystring); //mistakenly typed string earlier
char *line;
char *mystring;
{
......