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In this problem, we are given three integer values, L, R, and k. Our task is to find numbers with K divisors in a given range. We will be finding the count of numbers in the range [L, R] that have exactly k divisors. We will be counting the 1 and the number itself as a divisor.Let’s take an example to understand the problem, Inputa = 3, b = 10, k = 4Output2ExplanationNumbers with exactly 3 divisors within the range 3 to 10 are 6 : divisors = 1, 2, 3, 6 8 : divisors = 1, 2, 4, 8Solution ... Read More
Scope rules are related to the following factors −Accessibility of a variables.Period of existence of a variable.Boundary of usage of variables.Scope rules related to functions are as followsFunction which is a self-contained block that performs a particular task.Variables that are declared within the function body are called local variables.These variables only exist inside the specific function that creates them. They are unknown to other functions and to the main functions too.The existence of local variables ends when the function completes its specific task and returns to the calling point.Example 1Following is the C program for scope rules related to functions ... Read More
The scope rules are related to the following factors −Accessibility of a variables.Period of existence of a variable.Boundary of usage of variables.Scope rules related to statement blocks are given below −Block is enclosed in curly braces which consists of set of statements.Variables declared in a block are accessible and usable within that block and does not exist outside it.Example 1Following is the C program for scope rules related to statement blocks − Live Demo#include main ( ){ { int i = 1; printf ("%d", i); } { int j=2; ... Read More
An array is a group of related items that store with a common name.SyntaxThe syntax is as follows for declaring an array −datatype array_name [size];Types of arraysArrays are broadly classified into three types. They are as follows −One – dimensional arraysTwo – dimensional arraysMulti – dimensional arraysInitializationAn array can be initialized in two ways, which are as follows −Compile time initialization.Runtime initialization.Two multidimensional arraysThese are used in situations where a table of values have to be stored (or) in matrices applications.SyntaxThe syntax is given below −datatype array_ name [rowsize] [column size];For example int a[5] [5];a[0][0]10a[0][1]20a[0][2]30a[1][0]40a[1][1]50a[1][2]60a[2][0]a[2][1]a[2][2]Following is the C Program for ... Read More
An array is a group of related items that store with a common name.SyntaxThe syntax is as follows for declaring an array −datatype array_name [size];Types of arraysArrays are broadly classified into three types. They are as follows −One – dimensional arraysTwo – dimensional arraysMulti – dimensional arraysOne – dimensional arrayThe Syntax is as follows −datatype array name [size]For example, int a[5]InitializationAn array can be initialized in two ways, which are as follows −Compile time initializationRuntime initializationExampleFollowing is the C program on compile time initialization − Live Demo#include int main ( ){ int a[5] = {10, 20, 30, 40, 50}; ... Read More
An array is a group of related items that store with a common name.SyntaxThe syntax is as follows for declaring an array −datatype array_name [size];InitializationAn array can also be initialized at the time of declaration −int a[5] = { 10, 20, 30, 40, 50};Reversing array in CWe can reverse array by using swapping technique.For example, if 'P' is an array of integers with four elements −P[0] = 1, P[1] = 2, P[2] = 3 and P[3]=4Then, after reversing −P[0] = 4, P[1] = 3, P[2] = 2 and P[3]=1ExampleFollowing is the C program to reverse an array −#include int ... Read More
First, let us learn how to find Highest Common Factor (HCF).Highest Common Factor (HCF)The greatest number divides each of the two or more numbers is called HCF or Highest Common Factor. It is also called as Greatest Common Measure(GCM) and Greatest Common Divisor(GCD).For example, What is the HCF of 12 and 16?Factors of 12 = 1, 2, 3, 4, 6, 12. Factors of 16=1, 2, 4, 8, 16Highest common factor (H.C.F) of 12 and 16 = 4.Least Common Multiple (LCM)For two integers x and y, denoted LCM(x, y), it is the smallest positive integer that is divisible by both x ... Read More
Functions are broadly classified into two types, which are as follows −Predefined functionsUser defined functionsPredefined (or) library functionsThese functions are already defined in the system libraries.Programmer will reuse the already present code in the system libraries to write error free code.But to use the library functions, user must be aware of syntax of the function.Example −sqrt() function is available in math.h library and its usage is −y= sqrt (x) x number must be positive eg: y = sqrt (25) then ‘y’ = 5printf ( ) present in stdio.h library.clrscr ( ) present in conio.h library.ExampleGiven below is the C program ... Read More
ProblemWrite a C program to check the entered password by the user is valid or not based on his/her ID using nested switch case.SolutionThe solution is explained below −In C language, we can write inner switch which is placed in an outer switch.The case values of the inner and outer switch can have common values.RulesAn expression executes to a result.Constants and unique values must be used for case labels.Case labels has to be end with a colon ( : ).A break keyword has to be included in each case.There can be only one default label.We can write nested multiple switch ... Read More
In this problem, we are given three integer values, L, R, and k. Our task is to find numbers with K odd divisors in a given range. We will be finding the count of numbers in the range [L, R] that have exactly k divisors.We will be counting the 1 and the number itself as a divisor.Let’s take an example to understand the problem, Inputa = 3, b = 10, k = 3Output2ExplanationNumbers with exactly 3 divisors within the range 3 to 10 are 4 : divisors = 1, 2, 4 9 : divisors = 1, 3, 9Solution ApproachA simple ... Read More