Command line argument ex1

 #include<iostream>

using namespace std;

int main(int argc ,char*argv[])

{

cout<<"Program name"<<argv[0]<<endl;

if (argc==2)

{

cout<<"the argument supplied is"<<argv[1]<<endl;

}

else if(argc>2)

{

cout<<"too many argumnt supplied."<<endl;

}

else

{

cout<<"one argument expected"<<endl;

}

return 0;

}