C語言 lineto()用法及代碼示例

頭文件graphics.h包含lineto()函數，該函數從當前位置到點(x，y)畫一條線。注意：使用getx()和gety()獲取當前位置。

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：當點的初始位置為(0,0)

以下是lineto()函數的實現，其初始位置為原點：

// 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; 
}

輸出：

情況2：當點的初始位置不是(0，0)

以下是lineto()函數的實現，其初始位置不是原點：

// 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; 
}

輸出：

相關用法

注：本文由純淨天空篩選整理自Sahil_Bansall大神的英文原創作品 lineto() function in C。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。