C图形中的bar（）函数-yiteyi-C++库

头文件显示图形。h包含 bar（） 函数，用于绘制二维矩形填充条。 语法：

null

void bar(int left, int top, int right, int bottom);

where,
left specifies the X-coordinate of top left corner,
top specifies the Y-coordinate of top left corner,
right specifies the X-coordinate of right bottom corner,
bottom specifies the Y-coordinate of right bottom corner.

例如：

Input : left = 150, top = 150, 
        right = 190, bottom = 350

        left = 220, top = 250, 
        right = 260, bottom = 350

        left = 290, top = 200, 
        right = 330, bottom = 350
Output : 


Input : left = 150, top = 250,
        right = 190, bottom = 350

        left = 220, top = 150, 
        right = 260, bottom = 350

        left = 290, top = 200,
        right = 330, bottom = 350
Output :

推荐：请尝试你的方法 {IDE} 首先，在进入解决方案之前。

下面是bar（）函数的实现。

                     // C implementation of bar() function                   
                     #include <graphics.h>                   
                             
                     // driver code                   
                     int                               main()                   
                     {                   
                                         // gm is Graphics mode which is                   
                                         // a computer display mode that                   
                                         // generates image using pixels.                   
                                         // DETECT is a macro defined in                   
                                         // "graphics.h" header file                   
                                         int                               gd = DETECT, gm;                   
                             
                                         // initgraph initializes the                   
                                         // graphics system by loading a                   
                                         // graphics driver from disk                   
                                         initgraph(&gd, &gm,                               ""                               );                   
                             
                                         // location of sides                   
                                         int                               left, top, right, bottom;                   
                             
                                         // left, top, right, bottom denotes                   
                                         // location of rectangular bar                   
                                         bar(left = 150, top = 150,                   
                                         right = 190, bottom = 350);                   
                             
                                         bar(left = 220, top = 250,                   
                                         right = 260, bottom = 350);                   
                             
                                         bar(left = 290, top = 200,                   
                                         right = 330, bottom = 350);                   
                             
                                         // y axis line                   
                                         line(100, 50, 100, 350);                   
                             
                                         // x axis line                   
                                         line(100, 350, 400, 350);                   
                             
                                         getch();                   
                             
                                         // closegraph function closes the                   
                                         // graphics mode and deallocates                   
                                         // all memory allocated by                   
                                         // graphics system .                   
                                         closegraph();                   
                             
                                         return                               0;                   
                     }                   

输出：

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