C Program #6

/* program to write a sentence is one file and print the entire sentence

to the second file by reversing the non palindrome word only*/

#include<stdio.h>

#include<string.h>

int palin(char c[15]);

int main()

{

FILE *fp,*fq;

char c='a',ct[15];

int i,len,j;

fp=fopen("first.txt","w");

if(fp==NULL)

      {

      printf("\n ERROR opening file:");

      }

else

      {

      printf("\n Enter the text:");

      while(c!='\n')

            {

      scanf("%c",&c);

            fprintf(fp,"%c",c);

            }

      }

fclose(fp);

fq=fopen("first.txt","r");

fp=fopen("second.txt","w");

if(fq==NULL)

      {

      printf("\n ERROR opening file:");

      }

else

      {

      while(!feof(fq))

            {

                  i=0;

                  c=fgetc(fq);

                  while(c!=' ' && c!='\n')

                        {

                        ct[i]=c;

                        i++;

                        c=fgetc(fq);

                        if(c==EOF)break;

                        }ct[i]='\0';

                  if(palin(ct)==0)

                        {

                        fputs(ct,fp);

                        fputc(' ',fp);

                        }

                  else

                        {

                        len=strlen(ct);

                        for(j=len-1;j>=0;j--)

                              {

                        fputc(ct[j],fp);

                              }

                        fputc(' ',fp);

                        }

            }

      }

fcloseall();

fp=fopen("second.txt","r");

      if(fp==NULL)

                  printf("\n ERROR OPENING FILE:");

      else

                  {

         printf("\n Text is the second file:\n");

                  while(!feof(fp))

                        {

                        fscanf(fp,"%c",&c);

                        printf("%c",c);

                        }

                  }

fcloseall();

return 0;

}

int palin(char c[])

{

int len,i,j=0;

char p[15];

len=strlen(c);

for(i=len-1;i>=0;i--)

      {

      p[j]=c[i];

      j++;

      }

      p[j]='\0';

      if(strcmp(p,c)==0)

            return 0;

            else

                  return 1;

}

C Program #5

/* Program to reverse the alternate words of a string */

#include<stdio.h>

#include<string.h>

void reverse(char rev[],int n);

int main()

{

char str[100],rev[10];

int len,i,j,count;

printf("\n Enter a string:");

gets(str);

len=strlen(str);

printf("\n Converted string is:\n");

for(i=0;i<len;i++)

      {

       printf("%c",str[i]);

       if(str[i]==' ')

            {

                  j=i;

                  count=0;

                  while(str[++j]!=' ')

                        {

                        rev[count]=str[j];

                        count ++;

                        }

                        reverse(rev,count);

                        i=j;

            putc(' ',stdout);

                  }

       }

      return 0;

}

void reverse(char rev[],int n)

{

 int i;

      for(i=n-1;i>=0;i--)

            printf("%c",rev[i]);

}

INPUT/OUTPUT:

Enter a string:Program to reverse the alternate words of a string

 Converted string is:

Program ot reverse eht alternate sdrow of a string 

Sorting of words in a String : C Code

Program to sort the words of a string

/* To sort the words of an input string */

#include<stdio.h>

#include<string.h>

#include<malloc.h>

int main()

{

char str[40],*x[10],*temp;

int i=0,j=0,len,t,k,l,tmp;

printf("\n Enter a string:");

gets(str);

len=strlen(str);

for(i=0;i<=len;i++)

      {

      k=i;

      tmp=0;

      while(str[k]!=' ' && str[k]!='\0')

            {

            k++;

            tmp++;

            if(str[i]=='\n')

            break;

            }

            x[j]=(char *)malloc(tmp*sizeof(char));

            l=0;

                  for(t=i;t<tmp+i;t++)

                  {

                        *(x[j]+l)=str[t];

                        l++;

                  }

                  *(x[j]+l)='\0';

            i=k;

            j++;

            }

for(i=0;i<j-1;i++)

      {

            for(k=i+1;k<j;k++)

                  {

                  if(strcmp(x[i],x[k])>0)

                        {

                        temp=x[k];

                        x[k]=x[i];

                        x[i]=temp;

                        }

                  }

      }

puts("\n Sorted words of the string:\n");

for(i=0;i<j;i++)

      printf("%s\n",x[i]);

return 0;

}

Input/Output:

Enter a string:sorting of the words in a string

 Sorted words of the string:

a
in
of
sorting
string
the
words