C++ Practical Section 11

51.    Example of Name Space
Answer :

#include<iostream.h>
#include<conio.h>

name space n1
{
int m = 10;
}
name space n2
{
int m = 100;
}

Void main()
{
int m=300;
cout<<"m="<<m;
cout<<"m="<<n1 :: m;
cout<<"m="<<n2 :: m;

using namespace n1;
cout<<"m="<<m;
getch();
}

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52.   Example of Nested Loop
Answer :

#include<iostream.h>
#include<conio.h>

Void main()
{
int i,j;
for(i=1; i<=-3; i++) //for rows
{
for(j=1; j<=3; j++) //for columns
{
cout<<j<<" ";
}
cout<<"\n";
}
getch();
}

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53.       Write a Program for print this

            4  3  2  1
            4  3  2  1
            4  3  2  1
Answer :

#include<iostream.h>
#include<conio.h>

Void main()
{
int i,j;
for(i=1; i<=3; i++)
{
for(j=4; j>=1; j--)
{
cout<<j<<" ";
}
cout<<"\n";
}
getch();
}

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54.    Write a Program for Print this

          1  3  5  7  9
          1  3  5  7  9
          1  3  5  7  9
          1  3  5  7  9

Answer :

#include<iostream.h>
#include<conio.h>

Void main()
{
int i,j;

for(i=1; i<=4; i++)
{
for(j=1; j<=9; j=j+2)
{
cout<<j<<" ";
}
cout<<"\n";
}
getch();
}

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55.    Example of Classes in C++

Answer :

#include<iostream.h>
#include<conio.h>

class student
{
int rn;
char nm[20];

public:
Void input()
{
cout<<"Enter Roll No:";
cin>>rn;
cout<<"Enter Name:";
cin>>nm;
}

Void show()
{
cout<<"rn:"<<rn;
cout<<"name:"<<nm;
}
};

Void main()
{
student Amit;
Amit.input();
Amit.show();
getch();
}

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