Question

C++ is fhe language

3. a) Write down answer for each of the following i) Give example of any string constant: ii) What is the relational operator to check equality for two variables? iii) Character constant for putting a tab: iv) Key word for setting width of an output: v) Function for finding the length of a string str1: b) Evaluate each of the following arithmetic or logical expression: i) Given x = 4, y = 8, z = 3 x* 2 == y && y-Z <= X ii) 12/12 + 3) = ? iii) 3 +9 != 12 || 7% 4 == 3

Answer 1

I can asnwer you for few questions.

3)

iv) SET LINESIZE command to control the width of the data displayed.

SET NUM[WIDTH] {10 | n}

Sets the default width for displaying numbers.

v)

#include<iostream>
#include<cstring>
using namespace std;
main() {
   string myStr = "This is a sample string";
   char myStrChar[] = "This is a sample string";
   cout << "String length using string::length() function: " << myStr.length() <<endl;
   cout << "String length using string::size() function: " << myStr.size() <<endl;
   cout << "String length using strlen() function for c like string: " << strlen(myStrChar) <<endl;
   cout << "String length using while loop: ";
   char *ch = myStrChar;
   int count = 0;
   while(*ch != '\0'){
      count++;
      ch++;
   }
   cout << count << endl;
   cout << "String length using for loop: ";
   count = 0;
   for(int i = 0; myStrChar[i] != '\0'; i++){
      count++;
   }
   cout << count;
}

Expected Output:

String length using string::length() function: 23
String length using string::size() function: 23
String length using strlen() function for c like string: 23
String length using while loop: 23
String length using for loop: 23