C 文本宽度示例解释

// C Implementation for textwidth() 
#include <graphics.h> 
#include <stdio.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, color, width; 
    char arr[100]; 
  
    // initgraph initializes the 
    // graphics system by loading a 
    // graphics driver from disk 
    initgraph(&gd, &gm, ""); 
  
    // textwidth function 
    width = textwidth("Hello Geek ! Have a good day."); 
  
    //sprintf stands for “String print”. 
    //Instead of printing on console, 
    //it store output on char buffer 
    //which are specified in sprintf 
    sprintf(arr, "Textwidth is = %d", width); 
  
    //outtext function displays text 
    //at current position. 
    outtext(arr); 
  
    getch(); 
  
    // closegraph function closes the 
    // graphics mode and deallocates 
    // all memory allocated by 
    // graphics system . 
    closegraph(); 
  
    return 0; 
}