In this program, we are going to share how to generate the Captcha using C programming language. If you are a beginner and want to start learning the C programming, then keep your close attention in this tutorial as I am going to share a C program to generate the Captcha.
Copy the below C program and execute it with the help of C compiler. At the end of this program, We have shared the output of this program.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 | #include<stdlib.h> #include<dos.h> #include<graphics.h> main() { int i = 0, key, num, midx, gd = DETECT, gm; char a[10]; initgraph(&gd,&gm,"C:\\TC\\BGI"); midx = getmaxx()/2; settextstyle(SCRIPT_FONT,HORIZ_DIR,5); settextjustify(CENTER_TEXT,CENTER_TEXT); setcolor(GREEN); outtextxy(midx,20,"CAPTCHA"); settextstyle(SCRIPT_FONT,HORIZ_DIR,2); outtextxy(midx,125,"Press any key to change the generated random code \"captcha\""); outtextxy(midx,150,"Press escape key to exit..."); setcolor(WHITE); setviewport(100,200,600,400,1); setcolor(RED); randomize(); while(1) { while(i<6) { num = random(3); if ( num == 0 ) a[i] = 65 + random(26); else if ( num == 1) a[i] = 97 + random(26); else a[i] = 48 + random(10); i++; } a[i] = '\0'; outtextxy(210,100,a); key = getch(); if( key == 27 ) exit(0); clearviewport(); i = 0; } } |
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