C++ Programs
Q-write a program to find the sum of natural number?
Program Code:
#include<iostream>
using namespace std;
int sum (int m)
{
if (m<1)
return 0;
else return m+sum(m-1);
}
int main()
{
int m;
cin>>m;
cout<<"Sum of natural number is
="<<sum(m)<<endl;
system ("pause");
}
Q-Write a program for standard deviation?
Program Code:
#include <iostream>
Q-Write a program for standard deviation?
Program Code:
#include <iostream>
#include <cmath>
using namespace std;
float
calculateSD(float data[]);
int main()
{
int i;
float
data[5];
cout
<< "Enter 5 elements: ";
for(i =
0; i < 5; i++)
cin >> data[i];
cout
<< endl << "Standard Deviation = " <<
calculateSD(data);
system("PAUSE");
return
0;
}
float
calculateSD(float data[])
{
float
sum = 0.0, mean, standardDeviation = 0.0;
int i;
for(i =
0; i < 5; i++)
{
sum += data[i];
}
mean =
sum/10;
for(i =
0; i < 5; i++)
standardDeviation += pow(data[i] - mean, 2);
return
sqrt(standardDeviation / 10);
}
Q-Write a program that uses array for making table of 4?
Program Code:
#include<iostream>
#include<cmath>
#include<cstring>
using namespace std;
int main()
{
string
table[20];
int
size=sizeof(table)/sizeof(string);
for(int
j=0 ;j<11 ;j++)
{
int
table=4*j;
cout<<"4*"<<j<<"="<<table<<endl;
}
system("pause");
return 0;
}
Q-Write a program to get date as input data and
print on the screen. Define all the functions outside the class.
Program Code:
#include<iostream>
#include<conio.h>
class data
{
private:
inty,m,d;
public:
voidgdata();
void display();
};
voiddata::gdata()
{
cout<< "enter year ?"; cin>>y;
cout<<"enter month?"; cin>>m;
cout<<"enter day?"; cin>>d;
}
voiddata::display()
{
cout<<"date is:"<<endl;
cout<<y<<m<<d;
}
int main()
{
dataabc;
abc.gdata();
abc.display();
return 0;
}
Q-Write a program to find the sum of two integers by initializing
data using constructors.
Program Code:
#include<iostream.h>
#include<conio.h>
class sum
{private : int n, m ,s;
public:
sum() {
n=2; m=3;
s=n+m;
cout<<"sum of "<<n<<"and"<<m<<"is
"<<s<<endl;
}
};
int main()
{
sum a;
return 0;
}
Q-Write a program to define two constructors with two input parameters
and three input parameters respectively to find out the maximum values.
Program Code:
#include<iostream>
#include<conio.h>
using namespace std;
class sum
{
private : int x,y,z,s;
public:
sum(int x, int y)
{
s=x+y;
if (x>y)
{
cout<<"greater number in 2
input aurgument constructor is "<<x<<endl;
}
else
{
cout<<"greater number in 2
input aurgument constructor is"<<y<<endl;
}
}
sum (int x, int y,int z)
{
s=x+y+z;
if
(x<y&&x<z)
{
cout<<"greater
number in 3 input aurgument constructor is
"<<x;
}
else
if(y>x&&y>z)
{
cout<<"greater
number in 3 input aurgument constructor is
"<<y;
}
else
{
cout<<"greater
number in 3 input aurgument constructor is "<<z;
}
}
};
int main()
{
sum a(3,4);
sum b(4,2,9);
return 0;
}
