12th CMS Practical Solutions || 2021-2022 ||

Q1) Write a C++ program of given Pattern:

1

1 2

1 2 3

1 2 3 4 5 

Solutions 

#include<iostream.h>
#include<conio.h>
void main()
{
int i,j;
clrscr();
for(i=1;i<=5;i++)
{
 for(j=1;j<=i;j++)
 {
  cout<<" "<<j;
 }
 cout<<"\n";
}
getch();
}

 

 

Q2) Write a C++ program to calculate sum of series:

Sum=1²+2²+3²+....n²

 Solutions

^{#include<iostream.h>
#include<conio.h>
void main()
{
int i,n,p,s=0;
clrscr();
cout<<"\nEnter the terms : ";
cin>>n;
for(i=1;i<=n;i++)
{
 p=i*i;
 s=s+p;
}
cout<<"\n Sum of series = "<<s;
getch();
}}

 

Q3) Write a C++ program to implements single inheritance concept.

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

class A
{
  public:
  void display1()
  {
   cout<<"\nI am Super Class or Parents Class or Base Class";
  }
};

class B : public A
{
  public:
  void display2()
  {
   cout<<"\nI am Sub Class or Child Class or Derived Class";
  }
};
void main()
{
clrscr();
B bobj; //object always created for sub class
sobj.display1();
sobj.display2();
getch();
}

Q4) Write C++ program to enter any 10 integers numbers in 1-D array and display total sum of those numbers.

#include<iostream.h>
#include<conio.h>
void main()
{
int a[10],s=0,i;
clrscr();
for(i=0;i<10;i++)
{
 cout<<"\nEnter any numbner ";
 cin>>a[i];
}
cout<<"\nArrays values ";
for(i=0;i<10;i++)
{
 s=s+a[i];
 cout<<" "<<a[i];
}
cout<<"\nSum of values = "<<s;
getch();
}