CPP - Array and Pointer

 

CPP

Array & Pointer

Fill in the blanks

          1.Array is Collection of Similar data type

          2.Types of Array   2  

          3.Write array syntax   datatype     variablename[size]={value};

          4. In Single dimensional array only presents in Row

          5. In Multidimensional array presents in Row  & Coloumn

          6. int a[2][2]= {{3,8},{5,4}. a[0][1]=   8   

          7.int a[5]={1,8,3,10,15}. a[5]  =   0    ,   a[2]=   8  

          8. Array allows string.[T/F]    False

          9.We can store character in Array .[T/F]     True

          10.Array is a Collections of different data type. [T/F].  False

          11.  Array stores multiple values in single variable.[T/F].  True

          12.Write a syntax for multidimensional Array  datatype variablename[row size][coloumn size]={value};

          13.Pointer points address of another variable

Answer the following Question

                                                                             (4 marks)

          1.Write a program for single dimensional array.

#include<iostream.h>

#include<conio.h>

void main()

{

int a[5],i;

clrscr();

for(i=0;i<5;i++)

{

cin>>a[i];

}

for(i=0;i<5;i++)

{

cout<<a[i]<<endl;

}

getch();

}

          2.Write a program for Array of Pointer

#include<iostream.h>

#include<conio.h>

void main()

{

int arr[5]={10,20,30,40,50};

int  *ptr,i;

ptr=arr;

clrscr();

for(i=0;i<5;i++)

{

         cout<<*(ptr+i)<<"\t";

         *(ptr+i)=*(ptr+i)+5;

}

cout<<endl;

for(i=0;i<5;i++)

{

                  cout<<arr[i]<<endl;

}

getch();

}

          3.Write a program to convert a word into lower case to upper case using Pointer

#include<iostream.h>

#include<conio.h>

void main()

{

char name[10];

char *cptr;

clrscr();

cout<<"enter the name in lower case:";

cin>>name;

cptr=name;

for(;*cptr!='\0';cptr++)

{

   if(*cptr>='a' && *cptr<='z')

                *cptr=*cptr-32;

}

cout<<" upper case is : "<<cptr<<endl;

}

Answer the following Question

                                                                                      (10 marks)

1.What is Array?Write a program for Multidimensional Array?

#include<iostream.h>

#include<conio.h>

void main()

{

int i,j,a[2][2];

clrscr();

cout<<"Enter the values \n";

for(i=0;i<2;i++)

{

for(j=0;j<2;j++)

{

cin>>a[i][j];

}

}

cout<<"\n Matrix a \n";

for(i=0;i<2;i++)

{

for(j=0;j<2;j++)

{

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

}

cout<<endl;

}

getch();

}