Memory Mapping Techniques and Application Examples in C Language In modern operating systems, memory mapping is an efficient method for file I/O operations. It allows programs to directly map files or devices into the process’s address space, enabling access to file contents as if they were memory. This technique is particularly effective when handling large … Read more
As developers using the C language, we interact with the main function daily, yet few truly understand the complex mechanisms behind this program entry point. This article will delve into the complete process from program startup to the execution of the main function, revealing key details hidden by the compiler. 1. The Complete Chain of … Read more
01 Read the following program: #include <stdio.h> main() { int i,j, m=55; for(i=1;i<=3;i++) for(j=3; j<=i; j++) m=m%j; printf(“%d\n “, m); } The output of the program is A) 0 B) 1 C) 2 D) 3 Answer: B Explanation: Brief 02 Read the following program: main() { int a=5,b=4,c=3,d=2; if(a>b>c) printf(“%d\n”,d); else if((c-1>=d)==1) printf(“%d\n”,d+1); else printf(“%d\n”,d+2); … Read more
01 Read the following program: main() { int a=1, b=3, c=5; int *p1=&a, *p2=&b, *p3=&c; *p3=*p1*(*p2); printf(“%d\n”,c); } The output result after execution is A) 1 B) 2 C) 3 D) 4 Answer: C Analysis: Brief 02 To write a good program, it is essential to ensure its correctness and reliability, and also to emphasize … Read more
The C language final exam is on July 1st. Compared to the monthly exam, the number of questions for the final has significantly increased, with 15 multiple-choice questions and 5 programming questions. Therefore, when faced with programming questions, you should have an initial idea immediately upon seeing the question, and then proceed step by step … Read more
Recently,I often hear this question: Teacher,C is it too old? Will it hinder the development of microcontrollers? Now with Python and some new languages, is learning C a waste of time? 1.The C language indeed has its quirks. It is easy to make mistakes, such as misusing pointers, array out-of-bounds, forgetting to free memory… These … Read more
Recently, a piece of exciting news has emerged: China’s independently developed and controllable new generation of domestic general-purpose processors —— Loongson 3C6000 has officially debuted.Domestic chips have finally torn through the iron curtain of Western technological blockade!This groundbreaking achievement not only breaks the decades-long technological monopoly of the West but also secures a crucial first … Read more
On June 30, the A-share semiconductor sector continued its strong performance, with the semiconductor index (886063.WI) rising 1.81%. According to Wind data, on that day, semiconductor companies with a market capitalization exceeding 100 billion yuan generally saw their stock prices rise. This includes companies like SMIC, Haiguang Information, Cambricon Technologies-U, Northern Huachuang, and Zhongwei Company. … Read more
1. Challenging 5nm Single Exposure! ASML Collaborates with Zeiss to Develop Next-Generation Hyper NA EUV Equipment On June 29, it was reported thatthe world’s largest semiconductor equipment leader ASML has begun developing the next-generation Hyper NA EUV advanced lithography machine, preparing for the chip industry over the next decade.The company’s Technical Executive Vice President Jos … Read more
Many years ago, when I first entered the semiconductor industry, I embarked on a lifelong learning journey. This amazing industry evolves so rapidly that you only need to understand the developments of the past few years to keep up. When I entered the leadership ranks, although I still received directives from my superiors, I also … Read more