Today is the 824th day of learning programming with a slightly cold rain! Hello, everyone! This is the CSP 2024 Group J Preliminary Exam Questions. Day 824 CSP 2024 Group J Preliminary Exam Questions Read the Program 2. Read the Program (The program input does not exceed the defined range of arrays or strings; for … Read more
The Fibonacci sequence is a classic mathematical sequence characterized by the fact that the first two numbers are 1 and 1, and from the third number onward, each number is the sum of the two preceding ones. The sequence is as follows: 1, 1, 2, 3, 5, 8, 13, 21, … Method 1: Using Loops … Read more
Deeply grasp recursive thinking and unlock the magical world of programming 1. What is Recursion? An Old Story Tells You “Once upon a time, there was a mountain, and on the mountain, there was an old monk telling a story to a young monk, and the story was: once upon a time, there was a … Read more
C language is an essential knowledge in embedded learning, and most operations revolve around C language. Among them, there are three “hard bones” that are almost universally recognized as difficult to tackle. 01 Pointers Pointers are recognized as the most difficult concept to understand, and they are a direct reason many beginners choose to give … Read more
In programming, recursion is a powerful technique that allows a function to call itself to solve problems. C, as a classic programming language, supports the definition and use of recursive functions. This article will detail what recursion is, how to implement recursion in C, and some common application examples. What is Recursion? Recursion refers to … Read more
01 Read the following program: void swap(char *x, char *y) { char t; t=*x; *x=*y; *y=t; } main() { char *s1=”abc”, *s2=”123″; swap(s1,s2); printf(“%s,%s\n”,s1,s2); } The output of the program is A) 123,abc B) abc,123 C) 1bc,a23 D) 321,cba Answer: C Analysis: The function swap works as follows: t = *x; saves the character pointed … Read more
In the official GESP C++ Level 4 exam syllabus, there are a total of 11 key points. This article analyzes and introduces the 6th key point. (6) Master the basic ideas of recursion algorithms, the derivation of recursive relationships, and the solution of recursive problems. Review of other Level 4 key points: GESP C++ Level … Read more
01 Given that x, y, and t are all int type variables, after executing the statement: x=y=3; t=++x||++y; the value of y is ( ) A) Undefined value B) 4 C) 3 D) 2 Answer: C Explanation: The short-circuit characteristic of || (logical OR): If the expression on the left of || is true (non-zero), … Read more
📌 Problem Description Write a program to output the first n terms of the Fibonacci sequence (starting from 1, in the form of 1, 1, 2, 3, 5…). Requirements:1. Support input of any positive integer n2. Optimize time complexity to O(n)Example: Input: n=5 → Output: 1 1 2 3 5 Input: n=1 → Output: 1 … Read more
C Language Learning Guide: Have You Mastered These Core Knowledge Points?Latest C Language Learning Path for 2025 | Beginner, Intermediate, PracticalBeginner’s Guide to Avoiding Pitfalls in C Language: Avoid These 12 Devilish Details to Double Your Efficiency! Main Content C Language Functions: From Beginner to Mastery – A Comprehensive Guide In the programming universe of … Read more