Program : 12

PROGRAM - 12

a)  Write a program to display the position or index in the main string S where the sub-string T begins. Display -1 if S does not contain T.

Program:

#include<stdio.h>

#include<conio.h>

#include<string.h>

main()

{

     char s[50],t[10],*pos;

     int posn;

     clrscr();

     printf("enter the main string");

     gets(s);

     printf("enter the sub string");

     gets(t);

     pos=strstr(s,t);

     if(pos)

     posn=pos-s+1;

     else

     posn=-1;

     printf("the position of the sub string is %d"

                                            ,posn);

     getch();

}

/*

INPUT:enter the main string VIVEKANANDA

enter the sub string NANDA

OUTPUT:

the position of the sub string is 7

*/

b)  Write a program to count the number of lines, 

  words and characters in a given text.

Program:

#include<stdio.h>

#include<conio.h>

#include<string.h>

main()

{

     int ch,l=0,w=0,c=0,end=0,line[50],i,chrctr=0;

     clrscr();

     printf("Enter the text and press enter twice \n");

     while(end==0)

     {

        c=0;

        while((ch=getchar())!='\n')

        {

           line[c++]=ch;

           chrctr++;

        }

        line[c]='\0';

        if(line[0]=='\0')

        break;

        else

        {

           w++;

           for(i=0;line[i]!='\0';i++)

           {

           if(line[i]==' '||line[i]=='\t')

           w++;

           if(line[i]==' '&&line[i+1]=='\0')

           w--;

           }

        }

        l=l+1;

     }

     printf("the text contains\n");

     printf("%4d lines\n%4d words\n%4d characters"

                                        ,l,w,chrctr);

     getch();

}

/*

INPUT:Enter the text and press enter twice

OUTPUT:

THINK POSITIVE BE AN OPTIMIST

KNOWLEDGE IS DIVINE

the text contains

   2 lines

   8 words

  48 characters

*/