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

int main()
{

        FILE* fp;
        char ch;
        char buf[300];
        int i,e;
        e = 20;
        fp = fopen("D:\\MyFolder","rb");

        if(fp==NULL)
                printf("The file dose not eists\n");

        fseek(fp,e,SEEK_SET);
        while((ch=getc(fp))!=EOF){
                if(ch!=0){
                        buf[n]=ch;
                        n++;}
                else{
                        printf("%s\n",buf);//to print the first found
                        //??????????????????????? //I want to update the buffer to hold another new found
                        e+=200;
                        fseek(fp,e,SEEK_SET);
                        }
        }

        fclose(fp);
return 0;

}

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

int main()
{

        FILE* fp;
        char ch;
        char buf[300];
        int i,e;
        e = 20;
        fp = fopen("D:\\MyFolder","rb");

        if(fp==NULL)
                printf("The file dose not eists\n");
// Problem #1 -- if you get an error opening the file, you
// process the file anyway

        fseek(fp,e,SEEK_SET);
// What is the fseek() for?

        while((ch=getc(fp))!=EOF){
// use more whitespace:  while ((ch = getc(fp)) != EOF){
// Makes the code easier to read

                if(ch!=0){
                        buf[n]=ch;
// You never initialized, nor defined, n.  
// I'll bet this never even compiled, did it?

                        n++;}
                else{

// You never loaded the 0 into the buffer. The printf() 
// doesn't know when to stop printing
                        printf("%s\n",buf);//to print the first found
                        //?????????????//I want to update the buffer to hold another new found
// So set the buffer pointer (n) back to the beginning

                        e+=200;
                        fseek(fp,e,SEEK_SET);
                        }
        }

        fclose(fp);
return 0;

}