制作控制台进度条? (视窗)

时间:2013-05-19 14:33:48

标签: c++ windows progress-bar console-application cout

所以我有一个函数(或者更确切地说,我稍后将其转换为函数)在控制台窗口中进行随机%进度;像这样:

#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,我希望输出如下:

1% completed

|

(稍后...)

25% completed

|||||||||||||||||||||||||

我该怎么做?

提前致谢!

3 个答案:

答案 0 :(得分:14)

打印字符'\r'非常有用。它将光标放在行的开头。

由于您无法再访问上一行,您可以使用以下内容:

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

每次迭代后:

int X;

...

std::cout << "\r" << percent << "% completed: ";

std::cout << std::string(X, '|');

std::cout.flush();

另外,您可以使用:Portable text based console manipulator

答案 1 :(得分:0)

我认为这看起来更好:

#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;
}

答案 2 :(得分:0)

使用graphics.h或使用更高级的WinBGI库。下载它,并将库文件和graphics.h文件放置在项目中的适当位置。然后只需使用名为gotoxy(int x,int y)的函数,其中x和y位于字符位置(而不是像素),请考虑您的控制台窗口在笛卡尔2D轴系统的第四象限中。但是x和y通常从1到n开始(取决于控制台窗口的大小)。每次发生这种情况时,您只需要清除屏幕即可

    system("cls");   
在Windows中,

as cls是用于此命令。否则,对于linux / Mac,请使用

    system("clear");

现在此函数在stdlib.h标头中。之后,您可以轻松地更新进度条并在其中编写任何内容。 但是您使用的进度条是不连续的。更有效率的方法是使用

# 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