C语言 lineto()用法及代码示例

头文件graphics.h包含lineto()函数，该函数从当前位置到点(x，y)画一条线。注意：使用getx()和gety()获取当前位置。

用法:

lineto(int x, int y);

where,
(x, y) are the coordinates upto which the
line will be drawn from previous point.

案例1：当点的初始位置为(0,0)

以下是lineto()函数的实现，其初始位置为原点：

// C Implementation for lineto() 
#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, ""); 
  
    // lineto function 
    lineto(250, 100); 
  
    getch(); 
  
    // closegraph function closes the 
    // graphics mode and deallocates 
    // all memory allocated by 
    // graphics system . 
    closegraph(); 
  
    return 0; 
}

输出：

情况2：当点的初始位置不是(0，0)

以下是lineto()函数的实现，其初始位置不是原点：

// C Implementation for lineto() 
#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, ""); 
  
    // change initial position of point 
    // with moveto function 
    moveto(100, 100); 
  
    // lineto function 
    lineto(250, 100); 
  
    getch(); 
  
    // closegraph function closes the 
    // graphics mode and deallocates 
    // all memory allocated by 
    // graphics system . 
    closegraph(); 
  
    return 0; 
}

输出：

相关用法

注：本文由纯净天空筛选整理自Sahil_Bansall大神的英文原创作品 lineto() function in C。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。