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C Articles
Page 20 of 96
Count minimum bits to flip such that XOR of A and B equal to C in C++
We are given with three binary sequences A, B and C of length N. Each sequence represents a binary number. We have to find no. of flips required of bits in A and B such that XOR of A and B results in C. A XOR B becomes C.First of all let us learn about truth table of XOR operation −XYX XOR Y000011101110From the above table we observe that for the same values in X and Y, X XOR Y results 0 else it results 1. So this will be helpful for finding bits to be flipped in A and ...
Read MoreC program to store Student records as Structures and Sort them by Name
In this problem, we are given a student’s record which contains student_id, student_name, student_percentage. Our task is to create a C program to store student records as structure and sort them by name.Let’s take an example to understand the problem, Input − student record ={{ student_id = 1, student_name = nupur, student_percentage = 98}, { student_id = 2, student_name = Akash, student_percentage = 75}, { student_id = 3, student_name = Yash, student_percentage = 62}, { student_id = 4, student_name = Jyoti, student_percentage = 87}, { student_id = 5, student_name = Ramlal, student_percentage = 80}}Output − student record ={{ student_id = ...
Read MoreBitwise recursive addition of two integers in C
In this problem, we are given two numbers. Our task is to create a C program for the Bitwise recursive addition of two integers.The logic to find the sum using the Bitwise operations is similar to what we used to do when we were in preschool. For finding the sum, we used to add each digit of the number and if a carry is there, we add it to the next digit.We will do a similar thing, find the sum using the XOR operator and check for the carry using the AND operation. If there is a carry we will ...
Read MoreProduct of maximum in first array and minimum in second in C
Given two arrays arr1[] and arr2[] of some size n1 and n2 respectively, we have to find the product of maximum element of first array arr1[] and minimum element of the second array arr2[].Like we have elements in arr1[] = {5, 1, 6, 8, 9} and in arr2[] = {2, 9, 8, 5, 3} so the maximum element in arr1 is 9 and the minimum element in arr2 is 2 so the product of both is 9*2 = 18, likewise we have to write a program to solve the given problem.Input arr1[] = {6, 2, 5, 4, 1} arr2[] = {3, ...
Read MoreProduct of N with its largest odd digit in C
Given a number N with we have to product the number with its largest odd digit. If there is no odd digit then print -1.Like we have initialized N with “153” and the largest odd digit in this number is 5 so the result would be the product of 153 with 5 i.e. 153 * 5 = 765 and if the number has no odd digit like 246 then the output must be -1.Input − N = 198Output − 1782Explanation − 198 * 9 = 1782Input − N = 15382Output − 76910Explanation − 15382 * 5 = 76910Approach used below ...
Read MorePrint 2D matrix in different lines and without curly braces in C/C++
Here, we will see the code that will print a 2D matrix in c/c++ programming language without using curly braces.Curly braces are separators in a programming language that are used to define separate code blocks in the program. Without curly braces defining scopes is difficult in c/c++.Let’s see the basic code and sample output to print 2D matrix.Example#include using namespace std; int main() { int arr[2][2] = {{12, 67}, {99, 5}}; int n = 2, m = 2; for (int i = 0; i < m; i++){ for (int j = 0; j < n; j++){ cout
Read MorePrint * in place of characters for reading passwords in C
In this problem, we are given a string password. Our task is to print * in place of characters of the password.Let’s take an example to understand the problem,Input: password Output ********To solve this problem, we will traverse the password we have entered and print * in place of characters of the password.ExampleThe below program will show the implementation of our solution#include #include int main() { char password[50] = "password"; int length = strlen(password); printf("Password : "); for(int i = 0; i
Read MoreHow arrays are passed to functions in C/C++
In this tutorial, we will be discussing a program to understand how arrays are passed to functions.In the case of C/C++, the arrays are passed to a function in the form of a pointer which provides the address to the very first element of the array.Example#include //passing array as a pointer void fun(int arr[]){ unsigned int n = sizeof(arr)/sizeof(arr[0]); printf("Array size inside fun() is %d", n); } int main(){ int arr[] = {1, 2, 3, 4, 5, 6, 7, 8}; unsigned int n = sizeof(arr)/sizeof(arr[0]); printf("Array size inside main() is %d", n); fun(arr); ...
Read MorePredefined Identifier __func__ in C
Identifier is the name given to an entity in programming to identify it in the program.Generally, identifiers are created by the programmer for efficient working but there are some predefined identifiers that are inbuilt in programming. For example, cout, cin, etc.Here, we will see one of these predefined identifiers of C programming language which is __func__.The formal definition of __func__ is −“The identifier __func__ shall be implicitly declared by the translator as if, immediately following the opening brace of each function definition, the declarationstatic const char __func__[] = “function-name”;appeared, where function-name is the name of the lexically-enclosing function.”C program The ...
Read MoreConvert a String to Integer Array in C/C++
In this tutorial, we will be discussing a program to understand how to convert a string into integer array in C/C++.For this we will create a new array. Traverse through the given string, if the character is a comma “, ”, we move on to the next character else add it to the new array.Example#include using namespace std; //converting string to integer array void convert_array(string str){ int str_length = str.length(); int arr[str_length] = { 0 }; int j = 0, i, sum = 0; //traversing the string for (i = 0; str[i] != '\0'; ...
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