Answer Posted / p.venkataramana

1///Program to Duplicate the even numbers
#include<iostream>
using namespace std;
main()
{
int n,i,j;
cout<<"How many numbers do u want to enter:";
cin>>n;
int a[2*n];
if(n>0)
{
cout<<"Enter the numbers:";
for(i=0;i<n;i++)
cin>>a[i];
cout<<"\n The original array is :";
for(i=0;i<n;i++)
cout<<"\t"<<a[i];
for(i=0;i<=n;i++)
{
if(a[i]%2==0)
{
n++;
for(j=n;j>i;j--)
{
a[j]=a[j-1];
}

i++;
a[i]=a[i-1];
}
}
cout<<"\n The updated array is:";
for(i=0;i<n-1;i++)
{
cout<<"\t"<<a[i];
}
}
else
cout<<"\n Invalid entry";
}
2.// Program to Reverse the array in the region
#include<iostream>
using namespace std;
main()
{
int n,i,x,y,t;
cout<<"How many numbers do u want to enter:";
cin>>n;
int a[n];
if(n>0)
{
cout<<"Enter the numbers:";
for(i=1;i<=n;i++)
cin>>a[i];
cout<<"Enter the positions for which the
array to be reversed from left to right:";
cin>>x>>y;
cout<<"\n the original array is:";
for(i=0;i<n;i++)
cout<<a[i];
if(x>y)
{
t=x;
x=y;
y=t;
}
if(x<1 || y>n)
cout<<"\n Invalid entry";
else
{
for(i=1;i<x;i++)
{
cout<<"\t"<<a[i];
}
for(i=y;i>=x;i--)
{
cout<<"\t"<<a[i];
}
for(i=y+1;i<=n;i++)
{
cout<<"\t"<<a[i];
}
}
}

else
cout<<"\n Invalid entry";
}

//Reverse the array in the region
#include<iostream>
using namespace std;
main()
{
int n,i,x,y,t;
cout<<"How many numbers do u want to enter:";
cin>>n;
int a[n];
if(n>0)
{
cout<<"Enter the numbers:";
for(i=1;i<=n;i++)
cin>>a[i];
cout<<"Enter the positions for which the
array to be reversed from left to right:";
cin>>x>>y;
cout<<"\n the original array is:";
for(i=0;i<n;i++)
cout<<a[i];
if(x>y)
{
t=x;
x=y;
y=t;
}
if(x<1 || y>n)
cout<<"\n Invalid entry";
else
{
for(i=1;i<x;i++)
{
cout<<"\t"<<a[i];
}
for(i=y;i>=x;i--)
{
cout<<"\t"<<a[i];
}
for(i=y+1;i<=n;i++)
{
cout<<"\t"<<a[i];
}
}
}

else
cout<<"\n Invalid entry";
}
3.//Store the count of the digits in all numbers in an array
and print the count
#include<iostream>
using namespace std;
main()
{
int
n,i,d,count0=0,count1=0,count2=0,count3=0,count4=0,count5=0,count6=0,count7=0,count8=0,count9=0;
cout<<"How many numbers do u want to enter:";
cin>>n;
int a[n];
int count[10];
if(n>0)
{
cout<<"\n Enter the numbers:\n";
for(i=0;i<n;i++)
cin>>a[i];
cout<<"\n The original array is:";
for(i=0;i<n;i++)
cout<<"\t"<<a[i];
for(i=0;i<n;i++)
{

while(a[i]!=0)
{

d=a[i]%10;
if(d==0)
count0++;
if(d==1)
count1++;
if(d==2)
count2++;
if(d==3)
count3++;
if(d==4)
count4++;
if(d==5)
count5++;
if(d==6)
count6++;
if(d==7)
count7++;
if(d==8)
count8++;
if(d==9)
count9++;
a[i]=a[i]/10;
}
}
count[0]=count0;
count[1]=count1;
count[2]=count2;
count[3]=count3;
count[4]=count4;
count[5]=count5;
count[6]=count6;
count[7]=count7;
count[8]=count8;
count[9]=count9;
for(i=0;i<10;i++)
{
if(count[i]!=0)
cout<<"\n "<<i<<"-"<<count[i];
}


}
else
cout<<"\n Invalid entry";
}

4. ///Print the largest occuring digit in an array of n numbers
#include<iostream>
using namespace std;
main()
{
int
n,i,j,d,t,count0=0,count1=0,count2=0,count3=0,count4=0,count5=0,count6=0,count7=0,count8=0,count9=0;
cout<<"\n Enter the size of the array:";
cin>>n;
int a[n];
int b[10];
int e[10];
if(n>0)
{
cout<<"\n Enter the elements into the array:";
for(i=0;i<n;i++)
cin>>a[i];
for(i=0;i<n;i++)
{
while(a[i]!=0)
{
d=a[i]%10;
if(d==0)
count0++;
if(d==1)
count1++;
if(d==2)
count2++;
if(d==3)
count3++;
if(d==4)
count4++;
if(d==5)
count5++;
if(d==6)
count6++;
if(d==7)
count7++;
if(d==8)
count8++;
if(d==9)
count9++;
a[i]=a[i]/10;
}
}
b[0]=count0;
b[1]=count1;
b[2]=count2;
b[3]=count3;
b[4]=count4;
b[5]=count5;
b[6]=count6;
b[7]=count7;
b[8]=count8;
b[9]=count9;
for(i=0;i<10;i++)
{
e[i]=b[i];
}
for(i=0;i<10;i++)
{
for(j=i;j<10;j++)
{
if(b[i]<b[j])
{
t=b[i];
b[i]=b[j];
b[j]=t;
}
}
}
for(i=0;i<10;i++)
{
if(e[i]==b[0])
cout<<"\n The largest occuring digit is:"<<i;
}
}
else
cout<<"\n Invalid entry";
}

5.//Arrange the array insuch a way that odd numbers come
first and then the even numbers
#include<iostream>
using namespace std;
main()
{
int n,i,j,t,k;
cout<<"\n Enter the size of the array:";
cin>>n;
int a[n];
if(n>0)

{
cout<<"\n Enter the elements into the array:";
for(i=0;i<n;i++)
cin>>a[i];
cout<<"\n The original array is:";
for(i=0;i<n;i++)
cout<<"\t"<<a[i];
for(i=0;i<n;i++)
{
if(a[i]%2==0)
{
for(j=i+1;j<n;j++)
{

if(a[j]%2!=0)
{
t=a[j];
a[j]=a[i];
a[i]=t;
i++;
break;
}
for(k=i;k>0;k--)
{
a[k]=a[k-1];
}


}

}

}
cout<<"\n the updated array is:";
for(i=0;i<n;i++)
cout<<"\t"<<a[i];
}
else
cout<<"\n Invalid entry";
}
6.//Spread the digits of the array in the same array
#include<iostream>
using namespace std;
main()
{
int n,i,j;
cout<<"\n Enter the size of the array:";
cin>>n;
int a[n];
if(n>0)
{
cout<<"\n Enter the numbers into the array:";
for(i=0;i<n;i++)
cin>>a[i];
cout<<"\n The original array is:";
for(i=0;i<n;i++)
cout<<"\t"<<a[i];
for(i=0;i<n;i++)
{
if(a[i]<0)
a[i]=a[i]*-1;
if(a[i]<10)
continue;
while(a[i]>9)
{
n++;
r=a[i]%10;
for(j=n-1;j>i;j--)
{
a[j]=a[j-1];
}
a[i+1]=r;
a[i]=a[i]/10;
}
}
cout<<"\n the updated array is:";
for(i=0;i<n;i++)
{
cout<<"\t"<<a[i];
}
}
else
cout<<"\n Invalid entry";
}

7.//Update the array so that an array element is followed by
its reverse
#include<iostream>
using namespace std;
main()
{
int n,i,p,rev,d,j;
cout<<"\n Enter the size of the array:";
cin>>n;
int a[2*n];
if(n>0)
{
cout<<"\n Enter the numbers into the array:";
for(i=0;i<n;i++)
cin>>a[i];
cout<<"\n The original array is:";
for(i=0;i<n;i++)
cout<<"\t"<<a[i];
for(i=0;i<n;i++)
{

rev=0;
p=a[i];
while(p!=0)
{

d=p%10;
rev=(rev*10)+d;
p=p/10;
}
for(j=n;j>i;j--)
{
a[j]=a[j-1];
}
n++;
i++;
a[i]=rev;
}
cout<<"\n The updated array is:";
for(i=0;i<n;i++)
{
cout<<"\t"<<a[i];
}
}
else
cout<<"\n Invalid entry";
}
8.//Store all palindrome numbers into another array
#include<iostream>
using namespace std;
main()
{
int n,i,j,rev,r,num,m,count=0;
cout<<"How many numbers do u want to enter:";
cin>>n;
int a[n];
int b[n];
if(n>0)
{
cout<<"\n Enter the numbers:\n";
for(i=0;i<n;i++)
cin>>a[i];
cout<<"\n The original array is:";
for(i=0;i<n;i++)

cout<<"\t"<<a[i];
cout<<"\n The updated array is:";
for(i=0;i<n;i++)
{
rev=0;
num=a[i];
while(a[i]!=0)
{
r=a[i]%10;
rev=(rev*10)+r;
a[i]=a[i]/10;
}
if(num==rev)
{
b[count]=num;
count++;
}
}

for(j=0;j<count;j++)
cout<<"\t"<<b[j];

}
else
cout<<"\n Invalid entry";
}
9.//Merge two stored array in a sorted fashion
#include<iostream>
using namespace std;
main()
{
int arr1[20],arr2[20],arr3[40],arr[40],temp;
int i,j,k,t;
int max1,max2;
cout<<"Enter number of elements in the list 1:";
cin>>max1;
cout<<"\n Take the elements in sorted order:\n";
for(i=0;i<max1;i++)
{
cout<<"Enter element"<<" "<<i+1<<":";
cin>>arr1[i];
}

cout<<"\n Enter number of elements in the list 2:";
cin>>max2;
cout<<"\n Take the elements in sorted order:\n";
for(j=0;j<max2;j++)
{
cout<<"Enter element"<<" "<<j+1<<":";
cin>>arr2[j];
}

i=0;
j=0;
k=0;
while((i<max1) && (j<max2))
{
if(arr1[i]<arr2[j])
arr3[k++]=arr1[i++];
else
arr3[k++]=arr2[j++];


}
while(i<max1)
arr3[k++]=arr1[i++];
while(j<max2)
arr3[k++]=arr2[j++];

cout<<"\n List 1:";
for(i=0;i<max1;i++)
cout<<"\t"<<arr1[i];
cout<<"\n List 2:";
for(j=0;j<max2;j++)
cout<<"\t"<<arr2[j];
cout<<"\n Merged list:";
for(k=0;k<(i+j);k++)
{
for(t=0;t<(i+j);t++)
{
if(arr3[k]<arr3[t])
{
temp=arr3[k];
arr3[k]=arr3[t];
arr3[t]=temp;
}
}
}
for(t=0;t<(i+j);t++)
{
if(arr3[t]!=arr3[t+1])

cout<<"\t"<<arr3[t];

}
cout<<"\n";
}

Write a program to generate random numbers in c?

1058

---

What is equivalent to ++i+++j?

1051

---

What are the similarities between c and c++?

1018

---

Given below are three different ways to print the character for ASCII code 88. Which is the correct way1) char c = 88; cout << c << " ";2) cout.put(88);3) cout << char(88) << " "; a) 1 b) 2 c) 3 d) constant

1093

---

a) Identify the following declarations. Ex. int i (integer variable) float a[l0](array of 10 real nos) int (*f())() void *f int (*f()) [] void *f int f[] [] [] char *(*f) () int (*f[]) [] float(*f) [] [] float **f int ******f

2094

---

Explain is it better to use a pointer to navigate an array of values, or is it better to use a subscripted array name?

1166

---

Can a pointer be null?

987

---

Hai sir, I had planned to write the NIC scientific engineer exam , plz post the sample question......

2143

---

What is advantage of pointer in c?

1132

---

Explain the meaning of keyword 'extern' in a function declaration.

1122

---

What are reserved words?

1058

---

write an algorithm to display a square matrix.

2655

---

The performance of an operation in several steps with each step using the output of the preceding step a) recursion b) search c) call by value d) call by reference

1176

---

What is the use of extern in c?

1059

---

What are the advantages of using Unions?

1077

---