#include<stdio.h> #include<graphics.h> #include<dos.h> void rainbow() { int gdriver = DETECT,gmode; int x, y, i; initgraph(&gdriver,&gmode,”C:\\Turboc3\\BGI“); printf(“\nThis is a Rainbow“); setbkcolor(BLUE+WHITE); x = getmaxx() / 2; y = getmaxy() / 2; for (i=30; i<200; i++) { delay(100); setcolor(i/10…