制作控制台进度条?(Windows)

Making a console progress bar? (Windows)

本文关键字：Windows 控制台      更新时间：2023-10-16

所以我有一个函数(或者更确切地说，我稍后将把它变成一个函数)在控制台窗口中随机显示%进度;这样的:

#include <iostream>
#include <time.h>
#include <cmath>
#include <windows.h>
using namespace std;
int main()
{
    srand(time(0));
    int x = 0;
    for(int i = 0; i<100; i++){
        int r = rand() % 1000;
        x++;
        cout << "r" << x << "% completed." << flush;
        if(i < 43){
           Sleep(r/6);
        }else if(i > 43 && i < 74){
           Sleep(r/8);
        }else if(i < 98){
           Sleep(r/5);
        }else if(i > 97 && i != 99){
           Sleep(2000);
        }
    }
    cout << endl << endl << "Operation completed successfully.n" << flush;
    return 0;
}

问题是，我希望输出是这样的:

1% completed
|

(后来…)

25% completed
|||||||||||||||||||||||||

我该怎么做呢?

提前感谢!

打印字符'r'很有用。它将光标置于行首。

因为你不能再访问前一行，你可以像这样:

25% completed: ||||||||||||||||||

每次迭代后:

int X;
...
std::cout << "r" << percent << "% completed: ";
std::cout << std::string(X, '|');
std::cout.flush();

还可以使用:便携式基于文本的控制台操纵器

我觉得这样更好看:

#include <iostream>
#include <iomanip>
#include <time.h>
#include <cmath>
#include <windows.h>
#include <string>
using namespace std;
string printProg(int);
int main()
{
    srand(time(0));
    int x = 0;
    cout << "Working ..." << endl;
    for(int i = 0; i<100; i++){
        int r = rand() % 1000;
        x++;
        cout << "r" << setw(-20) << printProg(x) << " " << x << "% completed." << flush;
        if(i < 43){
           Sleep(r/6);
        }else if(i > 43 && i < 74){
           Sleep(r/8);
        }else if(i < 98){
           Sleep(r/5);
        }else if(i > 97 && i != 99){
           Sleep(1000);
        }
    }
    cout << endl << endl << "Operation completed successfully.n" << flush;
    return 0;
}
string printProg(int x){
    string s;
    s="[";
    for (int i=1;i<=(100/2);i++){
        if (i<=(x/2) || x==100)
            s+="=";
        else if (i==(x/2))
            s+=">";
        else
            s+=" ";
    }
    s+="]";
    return s;
}

使用graphics.h或使用更高级的WinBGI库。下载它并将库文件和graphics.h文件放在项目中的适当位置。然后使用名为gotoxy(int x, int y)的函数，其中x和y位于字符位置(而不是像素)。假设你的控制台窗口位于笛卡尔二维轴系统的第四象限。但是x和y通常从1到n开始(取决于控制台窗口的大小)。你只需要在每次出现这样的进度时清除屏幕

    system("cls");

as CLS是用于windows的命令。否则，对于linux/Mac使用

    system("clear");

现在这个函数在stdlib.h头文件中。之后，您可以轻松地更新进度条并在其中的任何地方写入内容。但是您正在使用的进度条是不连续的。更有效的方法是使用

# Print iterations progress
def printProgressBar (iteration, total, prefix = '', suffix = '', decimals = 1, length = 100, fill = '█'):
    """
    Call in a loop to create terminal progress bar
    @params:
        iteration   - Required  : current iteration (Int)
        total       - Required  : total iterations (Int)
        prefix      - Optional  : prefix string (Str)
        suffix      - Optional  : suffix string (Str)
        decimals    - Optional  : positive number of decimals in percent complete (Int)
        length      - Optional  : character length of bar (Int)
        fill        - Optional  : bar fill character (Str)
    """
    percent = ("{0:." + str(decimals) + "f}").format(100 * (iteration / float(total)))
    filledLength = int(length * iteration // total)
    bar = fill * filledLength + '-' * (length - filledLength)
    print('r%s |%s| %s%% %s' % (prefix, bar, percent, suffix), end = 'r')
    # Print New Line on Complete
    if iteration == total: 
        print()
# 
# Sample Usage
# 
from time import sleep
# A List of Items
items = list(range(0, 57))
l = len(items)
# Initial call to print 0% progress
printProgressBar(0, l, prefix = 'Progress:', suffix = 'Complete', length = 50)
for i, item in enumerate(items):
    # Do stuff...
    sleep(0.1)
    # Update Progress Bar
    printProgressBar(i + 1, l, prefix = 'Progress:', suffix = 'Complete', length = 50)
# Sample Output
Progress: |█████████████████████████████████████████████-----| 90.0% Complete
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