1. PROGRAM TO ENTER  THE ELEMENTS OF AN ARRAY & PRINT IT

#include<iostream>

using namespace std;

int main()

{

// initializing varibles

int a[10],i,lim;

// there shoud be a limit for the number of varibles

cout<<"enter the limit\n";

cin>>lim;

cout<<"enter the array elements\n";

// LOOP FOR ENTERING THE ARRAY ELEMENTS

for(i=0;i<lim;i++)

{

cout<<"enter the"<<i+1<<"st element";

cin>>a[i];

}

// same as entering . printing the array elements

cout<<" the array elements are\n";

for(i=0;i<lim;i++)

{

cout<<a[i];

}

return 0;

}

#include<iostream>

using namespace std;

int main()

{

int Arr[100],n,small,large,i;

cout<<"Enter number of elements you want to insert ";

cin>>n;

for(int i=0;i<n;i++)

{

cout<<"Enter element "<<i+1<<":";

cin>>Arr[i];

}

small=Arr[0];

large=Arr[0];

for(i=1;i<n;i++)

{

if(Arr[i]<small)

small=Arr[i];

if(Arr[i]>large)

large=Arr[i];

}

cout<<"\nLargest element is :"<<large;

cout<<"\nSmallest element is :"<<small;

return 0;

}

2.PROGRAM TO FIND THE SUM OF THE ENTERED ELEMENT OF AN ARRAY

#include<iostream>

using namespace std;

int main()

{

// initializing varibles

int a[10],i,lim,sum=0;

// there shoud be a limit for the number of varibles

cout<<"enter the limit\n";

cin>>lim;

cout<<"enter the array elements\n";

for(i=0;i<lim;i++)

{

cout<<"enter the"<<i+1<<"st element";

cin>>a[i];

// here the sum is calculated

sum=sum+a[i];

}

cout<<" the array elements are\n";

for(i=0;i<lim;i++)

{

cout<<a[i];

}

cout<<" the sum of elements are"<<sum;

return 0;

}

similarly from the above programs we can find the(+,-,*,/) of array elements

3. PROGRAM TO SEARCH FOR THE ARRAY ELEMENTS

#include<iostream>

using namespace std;

int main()

{

// HERE num is the number to be searched  and pos is the position of the element

whether it belongs to a[0] or a[1] or a[3]...... up to the limit

int a[20],x,num,y=0,pos;

cout<<" enter the number of elements in the array\n\a";

cin>>x;

cout<<" enter the elements of the string\n\a";

for(int i=0;i<x;i++)

{

cin>>a[i];

}

cout<<" enter the number to be searched\n\a";

cin>>num;

// u an use any loops here i have used for loop

int i=0;

while(i<x) //here x is the limit

{

if(a[i]==num)

{

  y=1;// if the a[element] == number then  y is given the value 1 and the position of the 

                     varible is passed  to  pos

  pos=i;

  break;

}i++;

}

if(y==1)

{

cout<<" the element is found in"<<pos+1<<"position\n\a";

}

else

{

cout<<" the element is not found";

}

}

4.  PROGRAM TO FIND THE GREATEST ELEMENT IN AN ARRAY

#include<iostream>

using namespace std;

int main()

{

int Arr[100],n,small,large,i;

cout<<"Enter number of elements you want to insert ";

cin>>n;

for(int i=0;i<n;i++)

{

cout<<"Enter element "<<i+1<<":";

cin>>Arr[i];

}

        // just like finding the greatest & smallest number... same in an array but it comes with loop

        note small=arr[0];large=arr[0]; should be initilized before the loop

small=Arr[0];

large=Arr[0];

for(i=1;i<n;i++)

{ // conditions

if(Arr[i]<small)

small=Arr[i];

if(Arr[i]>large)

large=Arr[i];

}

cout<<"\nLargest element is :"<<large;

cout<<"\nSmallest element is :"<<small;

return 0;

}

5.program to find the sum of the elements of  a matrix

#include<iostream>

using namespace std;

int main()

{

int a[15][15],r,c,i,j,sum=0;

cout<<" enter the number of rows and columns\n";

cin>>r>>c;//reading how many rows &columns are there

for(i=0;i<r;i++)// loop for entering the elements of the row

{

cout<<" enter"<<i+1<<"st row :";

for(j=0;j<c;j++)

{

cout<<j+1<<"st column";

cin>>a[i][j];

sum=sum+a[i][j];//  finding the sum of the elemennts

} }

cout<<"printing array elements\n";

for(i=0;i<r;i++)

{

for(j=0;j<c;j++)

{

cout<<a[i][j];cout<<"\t";

}

cout<<"\n";

}

cout<<"the sum of the elements are"<<sum;

return 0;}