SUBSTRING DETECTION, COUNT AND REMOVAL

/*  SUBSTRING DETECTION, COUNT AND REMOVAL  */

#include<stdio.h>

#include<conio.h>

#include<string.h>

void main()

 {

   char s1[50],s2[50],a[50],s3[50],r[10];

   int i,j,k,c,l1,l2,s=0,p1[10],p=0;

   clrscr();

   printf("\n\t\tINPUT:");

   printf("\n\t\t------");

   printf("\n\t\tEnter the string:  ");

   gets(s1);

   printf("\n\t\tEnter the substring:  ");

   gets(s2);

   l1=strlen(s1);

   l2=strlen(s2);

   c=0;

   for(i=0;i<l1;i++)

     {

      k=0;

      if(s1[i]==s2[0])

       {

         for(j=i;j<i+l2;j++)

          {

            a[k]=s1[j];

            k++;

          }

         a[k]='\0';

         if(strcmp(a,s2)==0)

          {

            p1[p]=i+1;

            p++;

            c++;

            i=i+l2-1;

          }

       }

     else

       r[s++]=s1[i];

     }

   r[s++]='\0';

   printf("\n\t\tOUTPUT:");

   printf("\n\t\t-------");

   for(p=0;p<c;p++)

   printf("\n\t\t'%s' occurs at position  %d in

                                '%s'",s2,p1[p],s1);

   if(c==0)

     {

       printf("\n\t\tSubstring '%s' is not found",s2);

     }

   else

     {

       printf("\n\t\tSubstring '%s' is found at %d times in

                                            '%s'",s2,c,s1);

       printf("\n\t\tAfter detection of substring:  %s",r);

     }

   getch();

  }

INPUT:

------

Enter the string:  programming

Enter the substring:  m

OUTPUT:

-------

'm' occurs at position  7 in 'programming'

'm' occurs at position  8 in 'programming'

Substring 'm' is found at 2 times in 'programming'

After detection of substring:  prograing

INPUT:

------

Enter the string:  programming

Enter the substring:  ds

OUTPUT:

-------

Substring 'ds' is not found