write a C program to PRINT SUBSTRING of an original string

//Code:

#include

#include

#include

 void main()

  {

   char ch[50];

   int i=0,j,n,a,b;

   clrscr();

   printf("\n Enter a string : ");

    gets(ch);

    n=strlen(ch);

   printf("\n Enter lower and upper limit between %d to %d : ",i,n-1);

    scanf("%d%d",&a,&b);

   printf("\n The extracted string is : ");

    for(i=a;i<=b;i++)

    printf("%c",ch[i]);

    getch();

  }

/*Output:

Enter a string : my name is .............

Enter lower and upper limit between 0 to 26 : .......

The extracted string is : ...........