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;

}