Question

C++ program which make use of  six different string class constructors, and six different string class methods.

Answer 1

// below is c++ code

#include<iostream>
#include<string>
#include<bits/stdc++.h>
using namespace std;
int main()
{
string str1="shivraj kumar"; // first constructor initialize name
string str2(str1); // this is parametrized constructor
// here value of str1 is copies in str2 variable
string str3(str1,7,5); //extract letters from index 7 to length 5 from string str1 and save in str3;
string str4(str2,8); // extract length of 8 character from str2 and add it in str4
string str5(5,'x'); // create a 5 length x
string str6(str2.begin(),str2.begin()+6); //create a 6 length variable from str2 and add it in str6

cout<<"first constructor example "<<str1<<endl;
cout<<"second constructor example "<<str2<<endl;
cout<<"third constructor example "<<str3<<endl;
cout<<"fourth constructor example "<<str4<<endl;
cout<<"fifth constructor example "<<str5<<endl;
cout<<"sixth constructor example "<<str6<<endl;

cout<<"first method example of computing string length "<<str1.length()<<endl;
cout<<"second method example of computing starting character of str1 "<<str1.at(0)<<endl;
cout<<"third method example of computing and finding string shiva in str1 "<<str1.find("shiva")<<endl;
cout<<"fourth method example of computing and appending last name in str1 "<<str1.append(" pandit")<<endl;
cout<<"fifth method example of computing substring of length 3 from index 0 in str1 "<<str1.substr(0,3)<<endl;
str1.clear();
cout<<"sixth method example of computing and clearing str1 so length of str1 is "<<str1.length();

return 0;
}

//output

kumar "C:\Users\Shivraj kumar\Desktop\che\jhdjweg.exe" first constructor example shivraj kumar second constructor example shivraj kumar third constructor example kuma fourth constructor example fifth constructor sixth constructor example shivra example xxxxx first method example of of computing string length 13 second method example of computing starting character of stri s third method example of computing and finding string shiva in stri 4294967295 fourth method example of computing and appending last name in stri shivraj kumar pandit fifth method example of computing substring of length 3 from index o in stri shi sixth method example of computing and clearing stri so length of stri is o Process returned @ (exe) execution time : 0.184 s Press any key to continue. Activate Windows Go to Settings to activate Windows. Type here to search e 14:28 26-07-2020 E