c program to delete a substring from a text

#include <Stdio.h> 
 #include <conio.h> 
 main() 
 { 
       char text[200],str[20], new_text[200]; 
       int i=0, j=0, found=0, k, n=0, copy_loop=0; 
       clrscr (); 
       printf("\n Enter the main text: "); 
       gets(text); 
       fflush (stdin); 
       printf("\n Enter the string to be deleted: "); 
       gets(str); 
       fflush(stdin); 
    while(text[i] !='\0') 
    { 
                   j=0, found= 0, k=i; 
              while (text[k]==str [j] && str [j]!='\0') 
               { 
                              k++; 
                              j++; 
               } 
                  if (str [j]=='\0') 
                  { 
                          copy_loop=k; 
                  } 
                          new_text[n] = text[copy_loop]; 
                          i++; 
                          copy_loop++; 
                          n++; 
    } 
                   str[n]='\0'; 
                   printf("\n The new string is: "); 
                    puts(new_text); 
               getch(); 
    return 0; 
 }