Friday 1 May 2020

Write a Program for reading and writing data to and from the file using command line arguments.

#include<iostream.h>
#include<fstream.h>
#include<stdlib.h>
int main(int argc, char *argv[])
{
int number[9] = {11,22,33,44,55,66,77,88,99};
if(argc!=3)
{
cout<<"argc="<<argc<<"\n";
cout<<"Error in arguments\n";
exit(1);
}
ofstream fout1, fout2;
fout1.open(argv[1]);
if(fout1.fail())
{
cout<<"Could not open the file:"
<<argv[1]<<"\n";
exit(1);
}
fout2.open(argv[2]);
if(fout2.fail())
{
cout<<"Could not open the file:"
<<argv[2]<<"\n";
exit(1);
}
for(int i=0; i<9; i++)
{
if(number[i] % 2 == 0)
fout2<<number[i]<<" ";
else
fout1<<number[i]<<" ";
}
fout1.close();
fout2.close();
ifstream fin;
char ch;
for(i=1; i<argc; i++)
{
fin.open(argv[i]);
cout<<"Contents of "<<argv[i]<<"\n";
do
{
fin.get(ch);
cout<<ch;
}while(fin);
cout<<"\n\n";
fin.close();
}
return 0;
}

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