Programmer Group

Xiao Ming is typing a document using Microsoft Word. The document contains only a-z lowercase letters and spaces. During typing, the Home key, End key, _arrow key, _arrow key, Insert key, Backspace key may be pressed one or more times. Write a program that gives Xiao Ming the sequence of keys on the keyboard and outputs the final text displayed ...

sizeof keyword The sizeof keyword can be used to count the memory size occupied by the data type Syntax: sizeof (data type / variable) int main() { cout << "short Memory space occupied by type: " << sizeof(short) << endl; cout << "int Memory space occupied by type: " << sizeof(int) << endl; cout << ...

Lifetime of variable:   static keyword modifies a local variable. The local variable has a global lifetime, but the local variable is visible. If it leaves the scope, it will not be released    int i = 1;//i is a global variable with static lifetime.    void other() {       static int a = 2;       static int b;   ...

catalogue What is a file file name file type file buffer field name pointer Opening and closing of files fopen and fclose Sequential reading and writing of files fputc  fgetc fputs  fgets  fwrite fread  Random reading and writing of files fseek ftell rewind Document end judgment What is a file Files on disk are files. Bu ...

More answers to PAT class a questions – acking-you.github.io subject OJ platform Topic analysis Main idea of the title: Binary search tree is no stranger to everyone. This problem requires you to construct a binary tree. The binary search tree is also a complete binary tree, and then print out its sequence traversal sequence ...

PAT admission number consists of 4 parts: The first is the level, that is, T stands for the top level; A stands for class A; B stands for class B; The 2nd to 4th digits are the examination room number, ranging from 101 to 999; The 5th ~ 10th place is the examination date, with the format of year, month and day, accounting for 2 places in seque ...

go language basic data types Go is a strongly typed language. This means that each variable you declare is bound to a specific data type and accepts only values that match this type. Go has four types of data: Basic types: numbers, strings, and BooleansAggregate types: arrays and structuresReference types: pointer, slice, map, function, and ...

preface The function definition, header file, structure type and main function in this paper #include <stdio.h> #include <stdlib.h> #include <time.h> typedef struct LINK{ int data; struct LINK* next; }*link; link createlink(link ); void outlink(link ); void menu(link ); void deletelink(link ); link findlink(link ); ...

1. Find string length function Usage and Simulation Implementation of strlen strlen() function: this function calculates the number of characters in the string from the first character until it encounters an empty character, that is' \ 0 ', and then returns the length of the calculated number of characters, including' \ 0 '. Next, let's ...

🔑 Citation: Perhaps you have never heard of the concept of flexible array, but it does exist. In C99, the last element in the structure is allowed to be an array of unknown size, which is called a "flexible array" member. To make the array size controllable, it is necessary to cooperate with dynamic memory development. Fo ...