Programming Fundamentals:File Handling (Session 7)

Character count

#include<stdio.h>
#include<stdlib.h>
int main() 
{
  char file1[100];
  int count=0;
  char c,ch,ck;
  FILE *fptr;printf("Enter the file name\n");
  scanf("%s",file1);
  fptr=fopen(file1,"r");
  printf("Enter the character to be counted\n");
  scanf(" %c",&c);
  ck=c;
  if((int)c>=65 &&(int)c<=90)
    c=(int)c+32;
  while((ch=getc(fptr)))
  {
    if((int)ch>=65 && (int)ch<=90)
      ch=(int)ch+32;
    if(ch==EOF)
      break;
    else if(ch==c)
      count+=1;
  }
  printf("File '%s' has %d instances of letter '%c'.",file1,count,ck);
  fclose(fptr);
  return 0;
}

File copy

#include <stdio.h>

#include <stdlib.h>

 

int main()

{

   char ch, source_file[20], target_file[20];

   FILE *source, *target;

 

   printf("Enter the input file name\n");

   scanf("%s",source_file);

 

   source = fopen(source_file, "r");

   printf("Enter the output file name\n");

   scanf("%s",target_file);

   target = fopen(target_file, "w");

   while( ( ch = fgetc(source) ) != EOF )

      fputc(ch, target);

   fclose(source);

   fclose(target);

 

   return 0;

}

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