Write files to any directory in c++
Today I encountered an error when writing a file in a subdirectory of the C drive. I solved it after my own experiment. Make a small note.
The code is as follows:
#include
#include
#include
main()
{
int data[35];
int n=35, temp;
for(int i=0;i {
data[i]=i;
}
srand((unsigned)time(NULL));
FILE *fp;
fp=fopen( "C:\Program Files (x86)\Microsoft Visual Studio\MyProjects\2016.11.22\random\Data Storage.txt","w");
for(int j=0;j {
temp=rand()%n;
printf("%4d",data[temp]);
fprintf(fp,"%4d",data[temp]);
if(temp+1!=n)
{
data[temp]=data[n-1];
}
n--;
}
fclose(fp);
}
At the beginning, just put the address of the file C:Program Files (x86)Microsoft Visual StudioMyProjects2016.11.22random copy to fprintf(), but an error will be reported when running. Finally, add one in front of each file to write the data.

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



The steps to implement the strategy pattern in C++ are as follows: define the strategy interface and declare the methods that need to be executed. Create specific strategy classes, implement the interface respectively and provide different algorithms. Use a context class to hold a reference to a concrete strategy class and perform operations through it.

Nested exception handling is implemented in C++ through nested try-catch blocks, allowing new exceptions to be raised within the exception handler. The nested try-catch steps are as follows: 1. The outer try-catch block handles all exceptions, including those thrown by the inner exception handler. 2. The inner try-catch block handles specific types of exceptions, and if an out-of-scope exception occurs, control is given to the external exception handler.

C++ template inheritance allows template-derived classes to reuse the code and functionality of the base class template, which is suitable for creating classes with the same core logic but different specific behaviors. The template inheritance syntax is: templateclassDerived:publicBase{}. Example: templateclassBase{};templateclassDerived:publicBase{};. Practical case: Created the derived class Derived, inherited the counting function of the base class Base, and added the printCount method to print the current count.

Causes and solutions for errors when using PECL to install extensions in Docker environment When using Docker environment, we often encounter some headaches...

In C, the char type is used in strings: 1. Store a single character; 2. Use an array to represent a string and end with a null terminator; 3. Operate through a string operation function; 4. Read or output a string from the keyboard.

In multi-threaded C++, exception handling is implemented through the std::promise and std::future mechanisms: use the promise object to record the exception in the thread that throws the exception. Use a future object to check for exceptions in the thread that receives the exception. Practical cases show how to use promises and futures to catch and handle exceptions in different threads.

TLS provides each thread with a private copy of the data, stored in the thread stack space, and memory usage varies depending on the number of threads and the amount of data. Optimization strategies include dynamically allocating memory using thread-specific keys, using smart pointers to prevent leaks, and partitioning data to save space. For example, an application can dynamically allocate TLS storage to store error messages only for sessions with error messages.

Multithreading in the language can greatly improve program efficiency. There are four main ways to implement multithreading in C language: Create independent processes: Create multiple independently running processes, each process has its own memory space. Pseudo-multithreading: Create multiple execution streams in a process that share the same memory space and execute alternately. Multi-threaded library: Use multi-threaded libraries such as pthreads to create and manage threads, providing rich thread operation functions. Coroutine: A lightweight multi-threaded implementation that divides tasks into small subtasks and executes them in turn.
