Question

5. Write a C++ statement or statements that will:      

Print the first two digits and the  last two digits of any 4 digit number stored in an integer variable n.        

For example, given int n = 5623, print

56    23.

6. Write  C++ statements that will align the following three lines as printed in two 20 character columns.

Name                                                 Years President

Abraham Lincoln                                 1860-1865

Thomas Jefferson                               1801-1809

7.  Write a C++ statement or statements that will Output if a string has a length greater than 10, equal to 10 or less than 10.

Examples  :    

string str1 = “Four Score and Seven Years Ago”      would output “String Length > 10”

string str2 = “Good Day”                                            would output “String Length < 10”

string str3 = 0123456789”                                          would output “String Length = 10”

Answer 1

5.

Source Code:

#include <iostream>
using namespace std;

int main()
{
   int n=5623;
   cout<<(n/100)<<" "<<(n%100)<<endl;
   // modulo 100 returns last 2 digits and
   // division with 100 gives first 2 digits
}

6.

Source Code:

#include <iostream>
using namespace std;

int main()
{
   cout<<"Name"<<" "<<"Years President"<<endl;
   cout<<"Abraham Lincoln"<<" "<<"1860-1865"<<endl;
   cout<<"Thomas Jefferson"<<" "<<"1801-1809"<<endl;
}

7.

Source Code:

#include <iostream>
using namespace std;
void sayStringLength(string str)
{
if(str.length()>10)
cout<<"String Length > 10"<<endl;
else if(str.length()<10)
cout<<"String Length < 10"<<endl;
else
cout<<"String Length = 10"<<endl;
}
int main()
{
   string str1 = "Four Score and Seven Years Ago";
   sayStringLength(str1);
string str2 = "Good Day";   
sayStringLength(str2);
string str3 = "0123456789";
sayStringLength(str3);
}