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C++ Articles
Page 517 of 597
C++ Program to add few large numbers
Suppose we have an array nums of some large numbers. The large numbers are in range (-2^31 to 2^31 - 1). We have to find the sum of these numbers.So, if the input is like nums = [5000000003, 3000000005, 8000000007, 2000000009, 7000000011], then the output will be 25000000035.To solve this, we will follow these steps −x := 0for initialize i := 0, when i < size of nums, update (increase i by 1), do −x := x + nums[i]return xExampleLet us see the following implementation to get better understanding#include #include using namespace std; long long int solve(vector nums){ long long int x = 0; for(int i=0; i
Read MoreC++ program to demonstrate exception handling
Suppose there is a function that calculates some serious complex mathematical operations. But during the operations, some exceptions can occur. We have to handle the different types of exceptions that can occur and perform the following.If the computer is unable to allocate the memory for computation, we have to print 'Memory Low!'If any other C++-related exception occurs, we have to print 'Exception:' then the exception.If something else happens, we print 'Unhandled exception'.We are given an array that contains a pair of values, and we pass it to the function. If any exception occurs, we handle it, or otherwise, we print ...
Read MoreC++ program to search specific values in an array
Suppose we are given an array 'arr' that contains n number of sorted integer values. We are also given an array 'query' of size q, and we have to tell either the values in ‘query’ are present in the given array 'arr' or not. If a value in query is present in arr, we print "Present" along with the position where the value is situated in. Otherwise, we print "Not present" and print the position in arr, where the minimum value greater than the value in query is located. We have to remember that the arrays are 1-indexed.So, if the ...
Read MoreC++ program to print values in a specified format
Suppose we are given three double values. We have to format them and print them in the following format.We have to print the integer part of the first value in hexadecimal format with lowercase letters.We have to print the second value up to two decimal places, putting a sign before it to show whether it is positive or negative. The second value to be printed has to be rightjustified and 15 characters long, padded with underscores in the left unused positions.We have to print the third value up to nine decimal places in a scientific notation.So, if the input is ...
Read MoreC++ program to print values of different data types provided as input
Suppose we are given an integer value, a long value, a character value, a float value, and a double value as inputs. We have to print the values that are given to us as input maintaining their precision.So, if the input is like integer value = 15, long value = 59523256297252, character value = 'y', float value = 367.124, double value = 6464292.312621, then the output will be15 59523256297252 y 367.124 6464292.31262To solve this, we will follow these steps −Print the values given as input in separate lines.ExampleLet us see the following implementation to get better understanding −#include #include ...
Read MoreC++ program to overload addition operator to add two matrices
Suppose we have two matrices mat1 and mat2. We shall have to add these two matrices and form the third matrix. We shall have to do this by overloading the addition operator.So, if the input is like589679834763then the output will be131113131312To solve this, we will follow these steps −Overload the addition operator, this will take another matrix mat as second argumentdefine one blank 2d array vvDefine one 2D array vv and load current matrix elements into itfor initialize i := 0, when i < size of vv, update (increase i by 1), do:for initialize j := 0, when j < ...
Read MoreC++ program to overload extraction operator
Suppose we have a Person class with two attributes first_name and the last_name. It also has two methods called get_first_name() and get_last_name() to retrieve or set first name and last name respectively. We shall have to overload the extraction operator (
Read MoreC++ program to find maximum of each k sized contiguous subarray
Suppose we have an array with n elements and a value k. We shall have to find maximum value for each of the contiguous subarray of size k.So, if the input is like arr = [3, 4, 6, 2, 8], k = 3, then the output will be The contiguous subarrays of size 3 are [3, 4, 6], [4, 6, 2], [6, 2, 8], so the maximum elements are 6, 6 and 8.To solve this, we will follow these steps −Define one deque Qi of size kfor initialize i := 0, when i < k, update (increase i by 1), ...
Read MoreC++ program to define exception for small username, and validate username
Suppose we have a string of usernames and we shall have to check whether username is valid or not based on few conditions. So we shall have to define an exception that is thrown when the length of username is less than 5 characters long. We shall have to return "Valid" for valid username, "Invalid" for invalid username and throw exception for smaller usernames. The valid username conditions are −Username must be five-character longThere should not two consecutive 'w' in the usernameSo, if the input is like unames = ["amit", "to", "paul_tim", "greg_harry", "towwer"], then the output will be [Too ...
Read MoreC++ program to add different items with class templates
Suppose we want to make a class that can add two integers, two floats and two strings (string addition is basically concatenating strings). As input at first we take a number n represents there are n different operations. In each operation the first item is the type [int, float, string] and second and third are two operands. So each line will contain three elements. We shall have to read them and do the operations as mentioned.So, if the input is like5 int 5 7 int 6 9 float 5.25 9.63 string hello world string love C++then the output will be12 ...
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