Output:
Exer8

#include

#include

#include

#include

void nextscreen();

void nextscreen2();

void box();

void loop();

void main(){

nextscreen();

nextscreen2();

getche();}

void loop(){

for(int i=1;i<=25;i++) {gotoxy(29+i,16);textcolor(RED);cprintf("Û"); delay(60); } for(int o=1;o<=25;o++) { gotoxy(29+o,16);textcolor(YELLOW);cprintf("°"); } } void nextscreen2() { clrscr();int a,b,x,y,z,choice; for(x=1;x<=77;x++) {gotoxy(2+x,1);textcolor(YELLOW);cprintf("Í");gotoxy(2+x,21);textcolor(YELLOW);cprintf("Í"); }for(y=1;y<=20;y++){ gotoxy(3,1+y);textcolor(YELLOW);cprintf("º");gotoxy(79,1+y);textcolor(YELLOW);cprintf("º"); }gotoxy(3,1);textcolor(YELLOW);cprintf("É");gotoxy(3,21);textcolor(YELLOW);cprintf("È");gotoxy(79,1);textcolor(YELLOW);cprintf("»");gotoxy(79,21);textcolor(YELLOW);cprintf("¼");for(a=1;a<=49;a++) {gotoxy(15+a,4);textcolor(CYAN);cprintf("ß");gotoxy(15+a,17);textcolor(CYAN);cprintf("Ü"); }for(b=1;b<=14;b++) {gotoxy(16,3+b);textcolor(CYAN);cprintf("Þ");gotoxy(65,3+b);textcolor(CYAN);cprintf("Ý "); }gotoxy(35,3);textcolor(GREEN);cprintf("M E N U");gotoxy(30,6);textcolor(GREEN);cprintf("[1] Addition ");gotoxy(30,8);textcolor(GREEN);cprintf("[2] Subtraction");gotoxy(30,10);textcolor(GREEN);cprintf("[3] Multplication");gotoxy(30,12);textcolor(GREEN);cprintf("[4] Division");gotoxy(30,14);textcolor(GREEN);cprintf("[5] Exit");gotoxy(30,15);textcolor(YELLOW);cprintf("Please make your choice:");scanf("%d",&choice);switch(choice){ case 1: float sum=0,x,y; clrscr(); box();gotoxy(30,7);textcolor(LIGHTRED);cprintf("Enter 1st number: ");scanf("%f", &x); gotoxy(30,8);textcolor(LIGHTRED);cprintf("Enter 2nd number: ");scanf("%f", &y); sum=x+y; gotoxy(30,10);textcolor(YELLOW);cprintf("Sum is %f.", sum);getche();nextscreen2(); break; case 2:float dif=0,a,b; clrscr(); box(); gotoxy(30,7);textcolor(LIGHTRED);cprintf("Enter 1st number: ");scanf("%f", &a); gotoxy(30,8);textcolor(LIGHTRED);cprintf("Enter 2nd number: ");scanf("%f", &b); dif=a-b; gotoxy(30,10);textcolor(YELLOW);cprintf("Difference is %f.", dif); getche();nextscreen2();break; case 3:float pro=0,c,d;clrscr();box();gotoxy(30,7);textcolor(LIGHTRED);cprintf("Enter 1st number: ");scanf("%f", &c); gotoxy(30,8);textcolor(LIGHTRED);cprintf("Enter 2nd number: "); scanf("%f", &d); pro=c*d;gotoxy(30,10);textcolor(YELLOW);cprintf("Product is %f.", pro); getche();nextscreen2();break;case 4:float quo=0,e,f;clrscr(); box(); gotoxy(30,7);textcolor(LIGHTRED);cprintf("Enter 1st number: ");scanf("%f", &e); gotoxy(30,8);textcolor(LIGHTRED);cprintf("Enter 2nd number: "); scanf("%f", &f); quo=e/f; gotoxy(30,10);textcolor(YELLOW);cprintf("Quotient is %f.", quo); getche();nextscreen2(); break; case 5:exit (0);nextscreen2();break; default:gotoxy(30,16);textcolor(WHITE);cprintf("Invalid input"); getche();nextscreen2();break; } getche(); } void nextscreen() { clrscr();int a,b,x,y,z; for(x=1;x<=77;x++) {gotoxy(2+x,1);textcolor(YELLOW);cprintf("Í");gotoxy(2+x,21);textcolor(YELLOW);cprintf("Í"); }for(y=1;y<=20;y++){ gotoxy(3,1+y);textcolor(YELLOW);cprintf("º");gotoxy(79,1+y);textcolor(YELLOW);cprintf("º"); }gotoxy(3,1);textcolor(YELLOW);cprintf("É");gotoxy(3,21);textcolor(YELLOW);cprintf("È");gotoxy(79,1);textcolor(YELLOW);cprintf("»");gotoxy(79,21);textcolor(YELLOW);cprintf("¼");for(a=1;a<=49;a++) { gotoxy(15+a,4);textcolor(CYAN);cprintf("ß");gotoxy(15+a,17);textcolor(CYAN);cprintf("Ü"); }for(b=1;b<=14;b++) { gotoxy(16,3+b);textcolor(CYAN);cprintf("Þ");gotoxy(65,3+b);textcolor(CYAN);cprintf("Ý "); }gotoxy(35,3);textcolor(GREEN);cprintf("W E L C O M E");gotoxy(40,6);textcolor(GREEN);cprintf("T O");gotoxy(30,8);textcolor(GREEN);cprintf("C S 1 2 1 ");gotoxy(40,10);textcolor(GREEN);cprintf("P R O G R A M M I N G");gotoxy(30,12);textcolor(GREEN);cprintf("W O R L D");for(z=1;z<=25;z++){ gotoxy(29+z,16);textcolor(YELLOW);cprintf("ß"); }gotoxy(28,15);textcolor(RED);cprintf("LOADING......");for(int d=1;d<=5;d++) { loop(); } } void box() { clrscr();int a,b,x,y,z; for(x=1;x<=77;x++) {gotoxy(2+x,1);textcolor(YELLOW);cprintf("Í");gotoxy(2+x,21);textcolor(YELLOW);cprintf("Í"); }for(y=1;y<=20;y++){ gotoxy(3,1+y);textcolor(YELLOW);cprintf("º");gotoxy(79,1+y);textcolor(YELLOW);cprintf("º"); }gotoxy(3,1);textcolor(CYAN);cprintf("É");gotoxy(3,21);textcolor(CYAN);cprintf("È");gotoxy(79,1);textcolor(CYAN);cprintf("»");gotoxy(79,21);textcolor(CYAN);cprintf("¼");for(a=1;a<=49;a++) { gotoxy(15+a,4);textcolor(CYAN);cprintf("ß");gotoxy(15+a,17);textcolor(CYAN);cprintf("Ü"); } for(b=1;b<=14;b++) {gotoxy(16,3+b);textcolor(CYAN);cprintf("Þ"); gotoxy(65,3+b);textcolor(CYAN);cprintf("Ý "); } }