C Articles - Page 32 of 134

Consider the factors given below to write a C program to rotate the bits for a given number.Rotating the bit from left to right or right to left.In left rotation, the bits are shifted from left to right.In right rotation, the bits are shifted from right to left.Take a number and try to rotate either left or right based on user program.User has to enter the number rotation at run time along with a number.Program 1Following is the C program to apply left rotation for a given number. Live Demo#include #include int main(){    int number, rotate, Msb, size;    printf("Enter ... Read More

Triangle consists of three sides and three angles. Based on the three sides, there are three types of triangle −Equilateral triangle: All three sides are equal.Isosceles triangle: All two sides are equal.Scalene triangle: No sides are equal.Follow the algorithm given below for writing the respective program.AlgorithmStep 1: Declare three sides of triangle. Step 2: Enter three sides at run time. Step 3: If side1 == side2 && side2 == side3 Go to step 6 Step 4: If side1 == side2 || side2 == side3 || side3 == side1 Go to Step 7 Step 5: Else Go to step 8 Step ... Read More

Enter the start and stop time with hours, minutes and seconds. Finally, we need to find the difference between start and stop time.The logic to find the difference between start and stop time is given below −while (stop.sec > start.sec){    --start.min;    start.sec += 60; } diff->sec = start.sec - stop.sec; while (stop.min > start.min) {    --start.hrs;    start.min += 60; } diff->min = start.min - stop.min; diff->hrs = start.hrs - stop.hrs;ExampleFollowing is the program to find difference between start and stop time − Live Demo#include struct time {    int sec;    int min;    int hrs; ... Read More

An array of characters is called a string. Declaration Following is the declaration declaring an array is as follows − char stringname [size]; For example: char string[50]; string of length 50 characters Initialization Using single character constant − char string[10] = { ‘H’, ‘e’, ‘l’, ‘l’, ‘o’ ,‘\0’} Using string constants − char string[10] = "Hello":; Accessing − There is a control string "%s" used for accessing the string till it encounters ‘\0’. Finding maximum occurrence The logic to find the maximum occurrence of character is − ... Read More

Follow the algorithm to write a C program which enables to count the frequency of each character.AlgorithmStep 1: Define MAX size. Step 2: Declare char and integer variables. Step 3: Read the string from console. Step 4: Find length of the string. Step 5: Initialize frequency of each character to 0. Step 6: Find total number of occurrences of each character. for(i=0; i='a' && string[i]='A' && string[i]

Character can be (A-Z(or) a- z), digit (0-9), a white space, or a special symbol in C programming language.DeclarationFollowing is the declaration for character operations in C programming −char a= ‘A’; using a character constant.Character input / output functionsThe character input/output functions are explained below −Example − char a;scanf("%c", &a); printf ("%c", &a); a = getchar ( ); putchar (a); a = getch ( ); putch (a);ExampleFollowing is the C program for line counting using getchar() − Live Demo#include /* count lines in input */ main(){    int count, num;    printf("enter multiple statements and Press cntrl+z:");    num = ... Read More

A union is a memory location that is shared by several variables of different data types.SyntaxThe syntax for the pointers to unions in C programming is as follows −union uniontag{    datatype member 1;    datatype member 2;    ----    ----    datatype member n; };ExampleThe following example shows the usage of union of structure.union sample{    int a;    float b;    char c; };Declaration of union variableFollowing is the declaration for union variable. It is of three types as follows −Type 1union sample{    int a;    float b;    char c; }s;Type 2union{    int a; ... Read More

In C programming, a union is a memory location shared by multiple variables of different data types. While we can define multiple members in a union, only one member can hold a value at any given time. This makes unions an efficient way to use the same memory space for different purposes. Declaration of Union Variable A union is a user-defined datatype in the C programming language. This allows the storage of different types of variables in the same location. A union can have multiple members, and only a single member can hold a value at any given time. Declaring ... Read More

Structure is a collection of different datatype variables, grouped together under a single name.General form of structure declarationThe structure declaration is as follows −struct tagname{    datatype member1;    datatype member2;    datatype member n; };Here, struct is the keyword.tagname specifies name of structure.member1, member2 specifies the data items that make up structure.ExampleThe following example shows the usage of the structure at a local scope.struct book{    int pages;    char author [30];    float price; };ExampleThe following program shows the usage the structure at a local scope. Live Demo#include struct{    char name[20];    int age;    int salary;   ... Read More

There are three ways by which the values of structure can be transferred from one function to another. They are as follows −Passing individual members as arguments to function.Passing entire structure as an argument to function.Passing the address of structure as an argument to function.Now, let us understand how to pass the address of structure as an argument to function.The address of the structure is passed as an argument to the function.It is collected in a pointer to structure in function header.AdvantagesThe advantages of passing the address of structure as an argument to function are as follows −No wastage of ... Read More