如何在C / C++中创建命令行进度条

任务是编写一个C / C++程序来绘制命令行进度条。

方法：创建进度条的想法是使用system()函数，该函数将提供彩色输出。下面是如何使用system()函数。

系统函数接受以下参数为输出屏幕着色：

1. 关键字：颜色
2. 背景颜色
3. 前景色

颜色代码：

Color	Color Code
BLACK	0
BLUE	1
GREEN	2
CYAN	3
RED	4
MAGENTA	5
BROWN	6
LIGHT GRAY	7
DARK GRAY	8
LIGHT BLUE	9
LIGHT GREEN	10
LIGHT CYAN	11
LIGHT RED	12
LIGHT MAGENTA	13
YELLOW	14
WHITE	15
BRIGHT GREEN	A
BRIGHT CYAN	B
BRIGHT RED	C
BRIGHT MAGENTA	D
BRIGHT YELLOW	E
WHITE	F

句法：

system(“color 9F”); 
The above code will give White Color output with Bright Blue color on Background. 

下面是在C / C++中的命令行中绘制进度条的程序：

C

// C program to create loading bar
#include 
#include 
  
// Function to creating loading bar
void loadingBar()
{
    // 0 - black background,
    // A - Green Foreground
    system("color 0A");
  
    // Initialize char for printing
    // loading bar
    char a = 177, b = 219;
  
    printf("\n\n\n\n");
    printf("\n\n\n\n\t\t\t\t\t"
           + "Loading...\n\n");
    printf("\t\t\t\t\t");
  
    // Print initial loading bar
    for (int i = 0; i < 26; i++)
        printf("%c", a);
  
    // Set the cursor again starting
    // point of loading bar
    printf("\r");
    printf("\t\t\t\t\t");
  
    // Print loading bar progress
    for (int i = 0; i < 26; i++) {
        printf("%c", b);
  
        // Sleep for 1 second
        Sleep(1000);
    }
}
  
// Driver Code
int main()
{
    // Function Call
    loadingBar();
    return 0;
}

C++

// C++ program to create loading bar
#include 
#include 
using namespace std;
  
// Function to creating loading bar
void loadingBar()
{
    // 0 - black background,
    // A - Green Foreground
    system("color 0A");
  
    // Initialize char for printing
    // loading bar
    char a = 177, b = 219;
  
    printf("\n\n\n\n");
    printf("\n\n\n\n\t\t\t\t\t"
           + "Loading...\n\n");
    printf("\t\t\t\t\t");
  
    // Print initial loading bar
    for (int i = 0; i < 26; i++)
        printf("%c", a);
  
    // Set the cursor again starting
    // point of loading bar
    printf("\r");
    printf("\t\t\t\t\t");
  
    // Print loading bar progress
    for (int i = 0; i < 26; i++) {
        printf("%c", b);
  
        // Sleep for 1 second
        Sleep(1000);
    }
}
  
// Driver Code
int main()
{
    // Function Call
    loadingBar();
    return 0;
}

输出：
以下是上述程序的输出：

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