Tag：C language
-
Implementation of telephone book management system with C language
This example shares the specific code of C language phonebook management system for your reference. The specific contents are as follows /*Made by sophomore practice week, Time: September 11, 2017 Phonebook management system */ #include<string.h> #include<stdio.h> #include<stdlib.h> #include<malloc.h> #define NULL 0 typedef struct lianxiren{ char job[30]; char number[20]; char name[10]; char email[30]; struct lianxiren*next; }lianxiren; […]
-
[C language] you may need to understand this method of calculating the size of structure members~
In C language programming, sometimes you need to know the size of a member in a structure. For example, when you use heap memory to store a member in a structure, you need to know the size of the member in order to determine the required space. Find the size of a member in a […]
-
Study day 5.2
C language If — the representative statement and judgment condition of the selection structure if If else if else if else、 int num = 100; int cost = 0; if (num > 200) cost = 1; else if (num > 300) cost = 2; else if (num > 80) cost = 3; else if (num […]
-
C language design simple telephone book
This example shares the specific code of C language to realize the telephone book for your reference. The specific contents are as follows #include <stdio.h> #include <stdbool.h> #include <string.h> #include <stdlib.h> #include <getch.h> Typedef struct contact {// defines the contact structure char name[20]; // full name char sex; // Gender char tel[12]; // Telephone }Contact; […]
-
Why should swift and python abandon + + \ –?
Today, let’s talk about why swift and python abandon + + –? Original text|<u> Address < / u > Easy to use + +– When it comes to the self increasing (+ +) \ self decreasing (- -) operators, my friends should be familiar with them. They often appear in the code of many programming […]
-
Many people don’t know the relationship between C language and C + +! Today we come to explore and solve our doubts~
Recently, many small partners around have begun to learn programming, but learning will encounter many problems. As a novice, Xiaobai mentioned the most problem is the choice of programming language. Every time I encounter this problem, it seems very simple, but many small partners can’t understand the relationship between programming languages; Today, as a programmer […]
-
Implementation of phonebook project in C language
This example shares the specific code of the telephone book project in C language for your reference. The specific contents are as follows Realization idea The overall idea and implementation of this program is still very simple. We use the way of dynamic memory allocation to first create the phonebook contact type, then create the […]
-
Study day 7
C language Loop control statement Goto statement Unconditional turn statements Goto generally forms a circular structure with if statements int a = 1, sum = 0; tiao: if (a <= 200) { sum = sum + a; a++; goto tiao; } printf(“%d”, sum); Goto — cannot be used across functions Jumping from inside the circulatory […]
-
[turn] C language programming skills: teach you how to define and use a string array
Achieve the purpose When we write programs in C language, we often encounter the use of string array. The characteristic of this array is that each element in the array is a string, but the length of each string is different. If you use C + + language for programming, the implementation is relatively simple. […]
-
IOS development judges whether the mobile phone has escaped from prison
This paper mainly introduces three ways to detect prison break 1. Judge by the prison break documents added after prison break Judge whether these files exist, add them to the array and traverse the array. If there is any file, it is considered to be a prison break – (BOOL)isJailBreak { NSArray *jailbreak_tool_paths = @[ […]
-
Study day 8
C language The general form of the for statement For — loop structure for（ ：） int a, sum = 0; for (a = 1; a <= 100; a++) { sum = sum + a; } printf(“sum=%d”, sum); A = 1 in parentheses is the initial value of the cyclic variable, a < = 100 is […]
-
C language to achieve the combination of strings
After learning Perl and python, processing strings is just something I like to do. String splicing is an easy thing in these high-level scripting languages. C language is my entry-level programming language, but I haven’t always understood this language very well. To be exact, I know little about the huge standard library and GNU and […]