stripos function

[lexxzy]

hello,
I have a problem.
I will create a C function (strPos) that will return position of first occurence of a case-insentitive string found in the stackOfStr string. The target may be a string of one or more characters. If target string is not found, it will return -1. The offset means the starting location of the search.

The function strPos() are not allowed to use any C library function calls.


the syntax of the strPos function is this:
int strPos(char *stackOfStr, char* target, int offset)

Does anyone has an idea about this?
Please I need a serious and exact answer for this.
Thank you in advance.

[sally9]

you might want to try something like this

int strpos(char *str,char *term)
{
  int r=0;
  while( *str != 0)
  {
    if( *str==term[0] )
      for(int i=1;i<300;i++)
      {
        if(term[i]==0) return r;
        if(str[i]!=term[i]) break;
      }
    str++;
    r++;
  }
  return -1;
}

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