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Program to find an input substring in an input main string

Program to find an input substring in an input main string

void main()
{

 int i=0,j=0,k=0,count=0,l=0,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)
 {
  if (a[i]==b[j])
  {
   i++;
   j++;
   k1=1;
   if (j==l)
   {
    j=0;
    k=1;
    count=count+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.");
   printf("
It is present %d times.",count);
  }
  else
  {
   if (k==0)
    printf("

The given sub-string is not present in the main string.");
  }
 getch();
}

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