gets (search_str)

(i =0; i < main_str [80]; i++)

if ((strcmp (searchstr, main_str)) == 0)
      found = 1;

 if (found)

printf (" \" %s \" found at position %d", searchstr, main_str[i] );

printf ("The word you want to search does not exist");

gets (del_str)

(i =0; i < main_str [80]; i++)

if ((strcmp (searchstr, main_str)) == 0)
      found = 1;

 *strptr [ i - 1] = ' ';

strcpy (main_str, newstring);

printf ("New string: %s", newstring);

printf ("The word you want to delete does not exist");

fgets ( search_str, sizeof search_str, stdin );

int len = strlen ( main_str );
for ( i = 0; i < len; i++ )

if ( strcmp ( search_str, &main_str[i] ) == 0 )
  fount = 1;

if ( fgets ( search_str, sizeof search_str, stdin ) != NULL ) {
  char *match = strstr ( main_str );

  if ( match != NULL )
    printf ( " \"%s\" found at position %d", search_str, match - main_str );
  else
    printf ("The word you want to search does not exist");
}

if ( fgets ( search_str, sizeof search_str, stdin ) != NULL ) {
  char *match = strstr ( main_str );

  if ( match != NULL ) {
    int len = strlen ( search_str );
    memmove ( match, match + len, len );
  }
  else
    printf ("The word you want to delete does not exist");
}

memmove ( match, match + len, len );

//Program to find an input substring in an input main string

void main()
{
 int i=0;
 int j=0;
 int k=0;
 int l=0;
 int k1=0;
 char a[80],b[80];

 clrscr();
 printf("Enter main string:- ");
 gets(a);
 printf("Enter sub-string:-");
 gets(b);

 l=strlen(b);
 while (a[i]!=EOF) do
       {
        if (a[i]==b[j])
           {
            i++;
   	    j++;
   	    k1=1;
           } 
         else
           {
   	    if (k1==1)
   	       {
    		j=0;
    		k1=0;
   	       }
   	     else
               i++;
           }
       }

  if (k==1)
     {
      printf("The given sub-string is present in the main string.");
     }
   else
     {
      if (k==0)
      printf("The given sub-string is not present in the main string.");
     }
 getch();
}

//Edits a string


#include<stdio.h>
#include<stdlib.h>
#include<conio.h>
#include<string.h>
#include<alloc.h>
#include<mem.h>



//All the functions to use
//Searches for the string
char Find(char main_str, int len)
{
 char search_str;	//The string to delete
 char *match;		//Contains the string that matches the one to search
 
 printf("String to find:");
 if ( fgets ( search_str, sizeof search_str, stdin ) != NULL ) 
    {
     char *match = strstr ( main_str );
    
     if ( match != NULL )
        printf ( " \"%s\" found at position %d", search_str, match - main_str );
      else
        printf ("The word you want to search does not exist");
    }
 getch();
 return new_str;
}


//Deletes the string
char Erase(char main_str, int len)
{
 char del_str;		//The string to delete
 char *del_match;	//Contains the string that matches the one to delete
 char new_str;		//Displays the new string
 int delstr_len;	//length of the string to delete

 printf("String to delete:  ");
 if ( fgets ( search_str, sizeof search_str, stdin ) != NULL ) 
    {
     del_match = strstr (main_str);
     if ( del_match != NULL ) 
        {
         delstr_len = strlen ( search_str );
         new_str = memmove ( del_match, del_match + len, len );
         printf ("New source: %s \n", new_str);
        }
      else
        printf ("The word you want to delete does not exist");
    }
 getch();
 return new_str;
}


//Inserts the string - the one you wanted me to try coding on
char Insert(char main_str,int len)
{
 int sub_len, total_len;	//variables to use in this function

 printf("String to insert: ");
 fgets(sub_str, sizeof sub_str, stdin);	// gets the string from the user
 
 sub_len = strlen (sub_str);		//gets the length of the string to insert
 
 printf("\nPosition of insertion>   ");
 scanf("%d", &pos);			//gets the position as to where to place the string on the main string
 
 total_len = len + sub_len;		//gets the total length of the two strings to use...
 
 char newstring[total_len];		//...as the basis for the length of this array that will hold both of them
 
  // from the starting point of insertion on main_str up to the end of sub_str, insert subtring while incrementing forward
 	for (i=main_str[pos]; i<sub_str[n-1]; i++)	
						   //does "sub_str[n-1]" access the tail end of sub_str?

     newstring = strcat (main_str, sub_str);	//starts inserting the sub_str into main_str using the strcat function
 printf("New source:  %s \n",newstring);	//prints out the string
 
 getch();
 return newstring;
}



//the program proper
void main(void)
{
 char main_str;		//the first string that the user types in
 int len;		//length of main string
 int choice;		//menu choice number

 do
  {
   do
    {		//the menu proper
     clrscr();
     printf("Please type in a sentence:  ");
     fgets(main_str, sizeof main_str, stdin);    //gets main_str
     len = strlen (main_str);       //gets the length of main_str

     printf ("\n");
     printf("[1] Find \n");
     printf("[2] Delete \n");
     printf("[3] Insert \n");
     printf("[4] Exit\n \n");
     printf ("\n");
     printf("Enter number of your choice:");
     scanf("%d",&choice);
    } while (choice <1 || choice>4);
	    switch(choice)
		  {
		   case 1:
			  Find();
			  break;
		   case 2:
			  Erase();
			  break;
		   case 3:
			  Insert();
			  break;
		  }
  } while (choice != 4);
}

int i;
unsigned char *src = match + len;
unsigned char *dst = match;

while ( --len >= 0 )
  *src++ = *dst++;

char *memmove ( void *dst, const void *src, int n )
{
  char *s = src;
  char *d = dst;

  if ( s < d && ( d < s + n ) ) {
    d += n;
    s += n;

    while ( --n >= 0 )
      *--d = *--s;
  }
  else {
    while ( --n >= 0 )
      *d++ = *s++;
  }

  return dst;
}

int main ( void )
{
  return 0;
}

int main ( int argc, char *argv[] )
{
  return 0;
}

		
//Inserts the string 

char Insert(char main_str,int len)
{
 int sub_len, total_len;
		
 printf("String to insert: ");
 fgets(sub_str, sizeof sub_str, stdin);		
 
 sub_len = strlen (sub_str);			
 
 printf("\nPosition of insertion>   ");
 scanf("%d", &pos);				
 
 total_len = len + sub_len;			
 
 char newstring[total_len];			
 
 for (i=main_str[pos]; i<sub_str[n-1]; i++)	
      newstring = strcat (main_str, sub_str);	

 printf("New source:  %s \n",newstring);	
 
 getch();
 return newstring;
}

char Insert(char main_str,int len)

 int sub_len, total_len;

 printf("String to insert: ");
 fgets(sub_str, sizeof sub_str, stdin);

sub_len = strlen (sub_str);

printf("\nPosition of insertion>   ");
 scanf("%d", &pos);

total_len = len + sub_len;

char newstring[total_len];

for (i=main_str[pos]; i<sub_str[n-1]; i++)

sub_str[n-1]

newstring = strcat (main_str, sub_str);

printf("New source:  %s \n",newstring);