Question

write a short c++ program that reads integers from a file named zzin1.dat (5,7,21,2,-9,10,3,1,11) until the eof condition is reached add 1 to each value and save it to an output file named acdc1.dat

Answer 1

Program:

#include<iostream>
#include<fstream>
using namespace std;
int add( ifstream & in, ofstream & out)
{
   int count;
   while (true)
   {
       in >> count;   // copying from input file
       if(in.eof()) break;   // exiting at the end of file
       count++;       // Incrementing values of every number
       out<<count<<" ";   // copying into output file
   }
}
int main()
{  
   char inputfile[500]="zzin1.dat";
   char outputfile[500]="acdc1.dat";
   ifstream fileinp;       // stream class to read from files
   fileinp.open(inputfile);
   ofstream fileop;       // stream class to write on files
   fileop.open(outputfile);
   add(fileinp,fileop);      
   return(0);
}

Output:

zzin1.dat should have number 5 7 21 2 -9 10 3 1 11

zzin1.dat x 5 7 21 2-9 1O 3 1 11