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C++ Articles
Page 518 of 597
C++ program to create one rectangle class and calculate its area
Suppose we have taken length and breadth of two rectangles, and we want to calculate their area using class. So we can make a class called Rectangle with two attributes l and b for length and breadth respectively. And define another function called area() to calculate area of that rectangle.So, if the input is like (10, 9), (8, 6), then the output will be 90 and 48 as the length and breadth of first rectangle is 10 and 9, so area is 10 * 9 = 90, and for the second one, the length and breadth is 8 and 6, ...
Read MoreC++ program to test inheritance through triangle class
Suppose we want to make one Triangle class and another child class called Isosceles. The triangle class has a function that prints that the object is of type triangle, and Isosceles has two functions to show that it is an isosceles triangle and one description. We also need to call the parent class function through Isosceles class object. There is no such proper input, we just call functions in proper way.So, if the input is like define an object called trg, then call trg.isosceles(), trg.description(), trg.triangle()., then the output will beThis is an isosceles triangleThere are two sides are equal ...
Read MoreC++ program to store student roll and name using map STL
Suppose we have a map data structure for students roll and name the roll is an integer data and name is string type data. In our standard input we provide n queries. In each query (in each line) there must be two elements and for type 1 query there are three elements. First one is the operator, second one is the roll and third one is the name, for two elements query the second item is the roll number. The operations are like below−Insert. This will insert the name into the map at corresponding rollDelete. This will delete the against ...
Read MoreC++ program to insert delete and find from set STL
Suppose we have a set data structure for integer type data. In our standard input we provide n queries. In each query (in each line) we have two elements. First one is the operator, second one is the element. The operations are like below −Insert. This will insert the element into the setDelete. This will delete the element from the set (if exists)Search. This will search the element into the set, if present show Yes, otherwise No.So, if the input is like n = 7, queries = [[1, 5], [1, 8], [1, 3], [2, 8], [1, 9], [3, 8], [3, ...
Read MoreC++ program to create boxes and calculate volume and check using less than operator
Suppose we shall have to define a box class with few conditions. These are as follows −There are three attributes l, b and h for length, breadth and height respectively, (these are private variables)Define one non-parameterized constructor to set l, b, h to 0, and one parameterized constructor to set values initially.Define getter methods for each attributeDefine a function calculateVolume() get the volume of the boxOverload less than operator (
Read MoreC++ program to check how many students have greater score than first one
Suppose we have n students score on five subjects. The first scores are for Kamal, and there are n-1 more scores for other students and each student has five subjects. We shall have to count number of students who have scored more than Kamal. Here we shall define one class called students to load scores for each students. The class has one Input() function to take input and calculateTotalScore() function to calculate score of a student from given five marks.So, if the input is like n = 4 scores = [[25, 45, 32, 42, 30], [22, 25, 41, 18, 21], ...
Read MoreC++ program to make student type data and display in proper format
Suppose we have provided the first name, last name, age and class of a student in different lines. We shall have to write a program using structs in C++ to read them all and show in this format (age, first_name, last_name, class). The age and class will be of type integer, and first_name and last_name are of time string.So, if the input is likepriyam kundu 16 10then the output will be (16, priyam, kundu, 10)To solve this, we will follow these steps −define a structure with first_name, last_name of type string and age, cl of type integerread each line and ...
Read MoreC++ program to get length of strings, perform concatenation and swap characters
Suppose we have two strings s and t, we shall have to find output in three lines, the first line contains lengths of s and t separated by spaces, the second line is holding concatenation of s and t, and third line contains s and t separated by space but their first characters are swapped.So, if the input is like s = "hello", t = "programmer", then the output will be5 10 helloprogrammer pello hrogrammerTo solve this, we will follow these steps −display length of s then print one space and length of tdisplay s + ttemp := s[0]s[0] := ...
Read MoreC++ Program to take out integer from comma separated string
Suppose we have a string where we have few integers which are separated by comma. We shall have to separate them out and display each integer in different line. To do this we shall use stringstream (under sstream library) in C++. This is one string based stream class present in C++. We can use extraction operator () to insert something and str() functions to set contents of underlying string device object.So, if the input is like s = "56, 9, 85, 256, 47", then the output will be56 9 85 256 47To solve this, we will follow these steps −Define ...
Read MoreC++ program to reverse an array elements (in place)
Suppose we have an array with n different elements. We shall have to reverse the elements present in the array and display them. (Do not print them in reverse order, reverse elements in place).So, if the input is like n = 9 arr = [2, 5, 6, 4, 7, 8, 3, 6, 4], then the output will be [4, 6, 3, 8, 7, 4, 6, 5, 2]To solve this, we will follow these steps −for initialize i := 0, when i < quotient of n/2, update (increase i by 1), do:temp := arr[i]arr[i] := arr[n - i - 1]arr[n - ...
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