Programmer Think

1. What day Title: what day January 1, 2000 is the first day of that year. So, May 4, 2000, is the first day of that year? Note: what needs to be submitted is an integer. Do not fill in any redundant content Answer: 125 #include<stdio.h> int main() { int s=31+29+31+30+4; printf("%d",s); return 0; } 2. Clear code Title: clear ...

Linux thread synchronization 1. Mutual exclusion Ensure that only one thread accesses data at a time. pthread_mutex_t mut; //Two initialization methods mut = PTHREAD_MUTEX_INITIALIZER; pthread_mutex_init(&mut, NULL); 1. Initialization int pthread_mutex_init (pthread_mutex_t *__mutex, const pthread_mutexat ...

Catalogue 1. Creation and initialization of array 1.1 creation of array 1.2 initialization of array 1.2.1 initialization of one-dimensional array 1.2.1 initialization of two-dimensional array 2. Some usage methods of array 2.1 calculating array size 2.2 output all contents of the array 3. Storage of array in memory 4. Array out of bou ...

catalogue 1, Constant: 1. Definition method: 2. Data type: (1) Integer constant: (2) Real constant: (3) Character constant: 2, Variable: 1. Define format: 2. Data type: 3. Integer variable input / output: 3, Input (scanf) output (printf) format: 1. Output (printf): 2. Input (scanf): 4, Naming rules: 5, Example: 1, Constant: ...

Message queue is the connection table of messages, which is stored in the kernel. This example mainly realizes inter process communication in the way of message queue. After receiving the message, the receiving end immediately forwards it to the sending end; After sending a message, the sender immediately monitors the message fed back by the re ...

preface Details determine success or failure. stem Everyone should be able to play the game of "hammer, scissors and cloth": two people give gestures at the same time, and the winning and losing rules are shown in the figure: Now the record of the confrontation between the two is given. Please count the number of wins, draws an ...

Super detailed explanation of data types in C language 1, Integer (int, short, long, long) 1. Signed integer Signed integer data types usually include int, short, long and long. Because they are signed types, they should be preceded by signed, but they are usually omitted. That is to say, typing int directly in the code means that they are ...

Catalog Branch statement 1. if statement 2. switch statement Loop statement 1. while statement 2. for loop 3. do...while() loop Branch statement Definition: Statements in the code are executed in order from top to bottom. Now you need to check a condition to execute different code according to different conditions, then you need to use ...

To realize the code of Sanzi chess, we must first understand the game rules of Sanzi chess, that is, both sides play chess in turn. If one party's three pieces form a line, the party wins. 1, Process The logic of the game is: 1. Establishment of game menu; 2. Create and initialize the chessboard; 3. Print chessboard; 4. The player plays c ...

Question C - Subparagraph Summation Gives an array of length N, makes Q queries, and queries the sum of all elements in a subsection of length l starting from the first element. For example, 1 137 9-1, query for subsections and 1 {37 9}-1 with a starting length of 3 for the second element. 3 + 7 + 9 = 19, output 19. Input Line 1: A number N ...