Append word to file - C File

C examples for File:Text File

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Description

Append word to file

Demo Code

#include <stdio.h>  
#include <stdlib.h>  

#define MAX 47  //  w  w w .  j a  va2s. c o m
  
int main(void) {  
     FILE *fp;  
     char words[MAX];  
     int wordct = 0;  
  
     if ((fp = fopen("wordy", "a+")) == NULL){  
          fprintf(stderr,"Can't open \"words\" file.\n");  
          exit(EXIT_FAILURE);  
     }  

     rewind(fp);  
     while (fgets(words, MAX, fp) != NULL)  
         wordct++;  
     rewind(fp);  
       
     puts("Enter words to add to the file; press the # to terminate.");  
     while ((fscanf(stdin,"%40s", words) == 1)  && (words[0] != '#'))  
          fprintf(fp, "%3d: %s\n", ++wordct, words);  
     puts("File contents:");  
     rewind(fp);           // go back to beginning of file  
     
     while (fgets(words, MAX, fp) != NULL) // read line including number  
          fputs(words, stdout);  
     
     if (fclose(fp) != 0)  
          fprintf(stderr,"Error closing file\n");  
     
     return 0;  
}

Result


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