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SCIENTIF.C
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#include<stdio.h>
#include<math.h>
#include<conio.h>
#include<graphics.h>
#include<dos.h>
void main()
{
int a,b,c,d,e,n,r,npr,ncr,chr,base,altitude,i;
char choice;
double x,y,z,area;
int gd=DETECT,gm;
initgraph(&gd,&gm,"c:\\TC\\BGI");
setbkcolor(GREEN);
setcolor(RED);
settextstyle(8,0,3);
outtextxy(80,80,"Student Reference Program");
setcolor(BLUE);
outtextxy(160,150,"SCIENTIFIC CALCULATOR");
for(i=0;i<330;i=i+10)
{
setcolor(RED);
outtextxy(i+150,120,"*"); //ANIMATION
delay(80);
outtextxy(i+150,170,"*");
delay(80);
sound(5000); //sound effect
delay(50);
nosound();
}
setcolor(BROWN);
settextstyle(7,0,3);
outtextxy(15,370,"SUBMITTED TO:-");
outtextxy(410,370,"SUBMITTED BY:-");
setcolor(LIGHTRED);
settextstyle(6,0,3);
outtextxy(20,390,"Open-Source Development");
outtextxy(435,390,"RAJAT DEY");
getch();
cleardevice();
do //BODY OF CALCULATOR
{
int gd=DETECT,gm;
initgraph(&gd,&gm,"c:\\TC\\BGI");
setcolor(WHITE);
setbkcolor(BROWN);
setfillstyle(SOLID_FILL, CYAN);
rectangle(10,50,630,450); //outer boundary
bar3d(20,70,270,410,10,5); //figure of the body
settextstyle(0,0,2);
outtextxy(190,20,"SCIENTIFIC CALCULATOR");
circle(255,90,5); //design
circle(245,90,5);
circle(235,90,5);
setfillstyle(SOLID_FILL, LIGHTGRAY);
bar(30,100,260,150); //display that shows the number
setfillstyle(SOLID_FILL,BLUE);
//complete 20 buttons that blinks
bar(30,180,80,210);
bar(90,180,140,210);
bar(150,180,200,210);
bar(210,180,260,210);
bar(30,220,80,250);
bar(90,220,140,250);
bar(150,220,200,250);
bar(210,220,260,250);
bar(30,260,80,290);
bar(90,260,140,290);
bar(150,260,200,290);
bar(210,260,260,290);
bar(30,300,80,330);
bar(90,300,140,330);
bar(150,300,200,330);
bar(210,300,260,330);
bar(30,340,80,370);
bar(90,340,140,370);
bar(150,340,200,370);
bar(210,340,260,370);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(40,185,"Add");
outtextxy(100,185,"Sub");
outtextxy(160,185,"Mul");
outtextxy(225,185,"Div");
outtextxy(45,225,"%");
outtextxy(100,225,"Mod");
outtextxy(160,225,"Abs");
outtextxy(220,225,"Sqrt");
outtextxy(42,265,"Sinx");
outtextxy(100,265,"Cosx");
outtextxy(160,265,"Tanx");
outtextxy(230,265,"ln");
outtextxy(45,305,"log");
outtextxy(90,305,"10^x");
outtextxy(160,305,"x^y");
outtextxy(225,305,"e^x");
outtextxy(45,345,"Tri");
outtextxy(100,345,"nPr");
outtextxy(160,345,"nCr");
outtextxy(220,345,"Hyp");
settextstyle(2,0,4);
outtextxy(230,340,"20");
outtextxy(170,340,"19");
outtextxy(110,340,"18");
outtextxy(50,340,"17");
outtextxy(230,300,"16");
outtextxy(170,300,"15");
outtextxy(110,300,"14");
outtextxy(50,300,"13");
outtextxy(230,260,"12");
outtextxy(170,260,"11");
outtextxy(110,260,"10");
outtextxy(50,260,"9");
outtextxy(230,220,"8");
outtextxy(170,220,"7");
outtextxy(110,220,"6");
outtextxy(50,220,"5");
outtextxy(230,180,"4");
outtextxy(170,180,"3");
outtextxy(110,180,"2");
outtextxy(50,180,"1");
settextstyle(7,0,1);
setcolor(LIGHTRED);
outtextxy(30,80,"RD"); //symbol of developer
setcolor(YELLOW);
outtextxy(300,70,"Step 1:");
setcolor(BLUE);
outtextxy(300,100,"Enter your choice for your");
outtextxy(300,120,"desired operation.");
gotoxy(70,9);
flushall();
scanf("%d",&chr);
switch(chr)
{
case 1:
for(i=0;i<1;i++)
{
setcolor(LIGHTBLUE);
setfillstyle(SOLID_FILL,LIGHTBLUE);
rectangle(30,180,80,210);
floodfill(32,182,LIGHTBLUE);
delay(40);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(40,185,"Add");
settextstyle(2,0,4);
outtextxy(50,180,"1");
delay(200);
sound(2000); //sound effect
delay(50);
nosound();
setcolor(BLUE);
setfillstyle(SOLID_FILL,BLUE);
rectangle(30,180,80,210);
floodfill(32,182,BLUE);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(40,185,"Add");
settextstyle(2,0,4);
outtextxy(50,180,"1");
}
settextstyle(7,0,1);
setcolor(YELLOW);
outtextxy(300,150,"Step 2:");
setcolor(BLUE);
outtextxy(300,180,"Enter the two No.");
gotoxy(6,8);
flushall();
scanf("%lf",&x);
outtextxy(110,105,"+");
gotoxy(18,8);
flushall();
scanf("%lf",&y);
z=x+y;
gotoxy(6,9);
printf("= %lf",z);
flushall();break;
case 2:
for(i=0;i<1;i++)
{
setcolor(LIGHTBLUE);
setfillstyle(SOLID_FILL,LIGHTBLUE);
rectangle(90,180,140,210);
floodfill(92,182,LIGHTBLUE);
delay(40);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(100,185,"Sub");
settextstyle(2,0,4);
outtextxy(110,180,"2");
delay(200);
sound(2000);
delay(50);
nosound();
setcolor(BLUE);
setfillstyle(SOLID_FILL,BLUE);
rectangle(90,180,140,210);
floodfill(92,182,BLUE);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(100,185,"Sub");
settextstyle(2,0,4);
outtextxy(110,180,"2");
}
settextstyle(7,0,1);
setcolor(YELLOW);
outtextxy(300,150,"Step 2:");
setcolor(BLUE);
outtextxy(300,180,"Enter the two No.");
gotoxy(6,8);
flushall();
scanf("%lf",&x);
outtextxy(110,105,"-");
gotoxy(18,8);
flushall();
scanf("%lf",&y);
z=x-y;
gotoxy(6,9);
printf("= %lf",z);
flushall();break;
case 3:
for(i=0;i<1;i++)
{
setcolor(LIGHTBLUE);
setfillstyle(SOLID_FILL,LIGHTBLUE);
rectangle(150,180,200,210);
floodfill(152,182,LIGHTBLUE);
delay(40);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(160,185,"Mul");
settextstyle(2,0,4);
outtextxy(170,180,"3");
delay(200);
sound(2000);
delay(50);
nosound();
setcolor(BLUE);
setfillstyle(SOLID_FILL,BLUE);
rectangle(150,180,200,210);
floodfill(152,182,BLUE);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(160,185,"Mul");
settextstyle(2,0,4);
outtextxy(170,180,"3");
}
settextstyle(7,0,1);
setcolor(YELLOW);
outtextxy(300,150,"Step 2:");
setcolor(BLUE);
outtextxy(300,180,"Enter the two No.");
gotoxy(6,8);
flushall();
scanf("%lf",&x);
outtextxy(110,105,"X");
gotoxy(18,8);
flushall();
scanf("%lf",&y);
z=x*y;
gotoxy(6,9);
printf("= %lf",z);
flushall();break;
case 4:
for(i=0;i<1;i++)
{
setcolor(LIGHTBLUE);
setfillstyle(SOLID_FILL,LIGHTBLUE);
rectangle(210,180,260,210);
floodfill(212,182,LIGHTBLUE);
delay(40);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(225,185,"Div");
settextstyle(2,0,4);
outtextxy(230,180,"4");
delay(200);
sound(2000);
delay(50);
nosound();
setcolor(BLUE);
setfillstyle(SOLID_FILL,BLUE);
rectangle(210,180,260,210);
floodfill(212,182,BLUE);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(225,185,"Div");
settextstyle(2,0,4);
outtextxy(230,180,"4");
}
settextstyle(7,0,1);
setcolor(YELLOW);
outtextxy(300,150,"Step 2:");
setcolor(BLUE);
outtextxy(300,180,"Enter the two No.");
gotoxy(6,8);
flushall();
scanf("%lf",&x);
outtextxy(110,105,"/");
gotoxy(18,8);
flushall();
scanf("%lf",&y);
z=x/y;
gotoxy(6,9);
printf("= %lf",z);
flushall();break;
case 5:
for(i=0;i<1;i++)
{
setcolor(LIGHTBLUE);
setfillstyle(SOLID_FILL,LIGHTBLUE);
rectangle(30,220,80,250);
floodfill(32,222,LIGHTBLUE);
delay(40);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(45,225,"%");
settextstyle(2,0,4);
outtextxy(50,220,"5");
delay(200);
sound(2000);
delay(50);
nosound();
setcolor(BLUE);
setfillstyle(SOLID_FILL,BLUE);
rectangle(30,220,80,250);
floodfill(32,222,BLUE);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(45,225,"%");
settextstyle(2,0,4);
outtextxy(50,220,"5");
}
settextstyle(7,0,1);
setcolor(YELLOW);
outtextxy(300,150,"Step 2:");
setcolor(BLUE);
outtextxy(300,180,"Enter the value and total value");
gotoxy(6,8);
flushall();
scanf("%lf",&x);
outtextxy(110,105,"/");
gotoxy(18,8);
flushall();
scanf("%lf",&y);
outtextxy(180,105,"%");
z= x/y*100;
gotoxy(6,9);
printf("= %lf",z);
flushall();break;
case 6:
for(i=0;i<1;i++)
{
setcolor(LIGHTBLUE);
setfillstyle(SOLID_FILL,LIGHTBLUE);
rectangle(90,220,140,250);
floodfill(92,220,LIGHTBLUE);
delay(40);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(100,225,"Mod");
settextstyle(2,0,4);
outtextxy(110,220,"6");
delay(200);
sound(2000);
delay(50);
nosound();
setcolor(BLUE);
setfillstyle(SOLID_FILL,BLUE);
rectangle(90,220,140,250);
floodfill(92,222,BLUE);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(100,225,"Mod");
settextstyle(2,0,4);
outtextxy(110,220,"6");
}
settextstyle(7,0,1);
setcolor(YELLOW);
outtextxy(300,150,"Step 2:");
setcolor (BLUE);
outtextxy(300,180,"Enter the two No.");
gotoxy(6,8);
flushall();
scanf("%d",&a);
gotoxy(18,8);
flushall();
scanf("%d",&b);
c=a%b;
gotoxy(6,9);
printf("= %d",c);
flushall();break;
case 7:
for(i=0;i<1;i++)
{
setcolor(LIGHTBLUE);
setfillstyle(SOLID_FILL,LIGHTBLUE);
rectangle(150,220,200,250);
floodfill(152,222,LIGHTBLUE);
delay(40);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(160,225,"Abs");
settextstyle(2,0,4);
outtextxy(170,220,"7");
delay(200);
sound(2000);
delay(50);
nosound();
setcolor(BLUE);
setfillstyle(SOLID_FILL,BLUE);
rectangle(150,220,200,250);
floodfill(152,222,BLUE);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(160,225,"Abs");
settextstyle(2,0,4);
outtextxy(170,220,"7");
}
settextstyle(7,0,1);
setcolor(YELLOW);
outtextxy(300,150,"Step 2:");
setcolor(BLUE);
outtextxy(300,180,"Enter the value.");
gotoxy(6,8);
scanf("%d",&a);
gotoxy(6,9);
printf("= %d",abs(a));
flushall();break;
case 8:
for(i=0;i<1;i++)
{
setcolor(LIGHTBLUE);
setfillstyle(SOLID_FILL,LIGHTBLUE);
rectangle(210,220,260,250);
floodfill(212,222,LIGHTBLUE);
delay(40);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(220,225,"Sqrt");
settextstyle(2,0,4);
outtextxy(230,220,"8");
delay(200);
sound(2000);
delay(50);
nosound();
setcolor(BLUE);
setfillstyle(SOLID_FILL,BLUE);
rectangle(210,220,260,250);
floodfill(212,222,BLUE);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(220,225,"Sqrt");
settextstyle(2,0,4);
outtextxy(230,220,"8");
}
settextstyle(7,0,1);
setcolor(YELLOW);
outtextxy(300,150,"Step 2:");
setcolor(BLUE);
outtextxy(300,180,"Enter the value");
gotoxy(6,8);
flushall();
scanf("%lf",&x);
y = sqrt(x);
gotoxy(6,9);
printf("= %lf",y);
flushall();break;
case 9:
for(i=0;i<1;i++)
{
setcolor(LIGHTBLUE);
setfillstyle(SOLID_FILL,LIGHTBLUE);
rectangle(30,260,80,290);
floodfill(32,262,LIGHTBLUE);
delay(40);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(42,265,"Sinx");
settextstyle(2,0,4);
outtextxy(50,260,"9");
delay(200);
sound(2000);
delay(50);
nosound();
setcolor(BLUE);
setfillstyle(SOLID_FILL,BLUE);
rectangle(30,260,80,290);
floodfill(32,262,BLUE);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(42,265,"Sinx");
settextstyle(2,0,4);
outtextxy(50,260,"9");
}
settextstyle(7,0,1);
setcolor(YELLOW);
outtextxy(300,150,"Step 2:");
setcolor(BLUE);
outtextxy(300,180,"Enter the value of angle in degree");
outtextxy(40,105,"sin");
gotoxy(10,8);
flushall();
scanf("%lf",&x);
x = x*22/(7*180);
y = sin(x);
gotoxy(6,9);
printf("= %lf",y);
flushall();break;
case 10:
for(i=0;i<1;i++)
{
setcolor(LIGHTBLUE);
setfillstyle(SOLID_FILL,LIGHTBLUE);
rectangle(90,260,140,290);
floodfill(92,262,LIGHTBLUE);
delay(40);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(100,265,"Cosx");
settextstyle(2,0,4);
outtextxy(110,260,"10");
delay(200);
sound(2000);
delay(50);
nosound();
setcolor(BLUE);
setfillstyle(SOLID_FILL,BLUE);
rectangle(90,260,140,290);
floodfill(92,262,BLUE);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(100,265,"Cosx");
settextstyle(2,0,4);
outtextxy(110,260,"10");
}
settextstyle(7,0,1);
setcolor(YELLOW);
outtextxy(300,150,"Step 2:");
setcolor(BLUE);
outtextxy(300,180,"Enter the value of angle in degree");
outtextxy(40,105,"cos");
gotoxy(10,8);
flushall();
scanf("%lf",&x);
x = x*22/(7*180);
y = cos(x);
gotoxy(6,9);
printf("= %lf",y);
flushall();break;
case 11:
for(i=0;i<1;i++)
{
setcolor(LIGHTBLUE);
setfillstyle(SOLID_FILL,LIGHTBLUE);
rectangle(150,260,200,290);
floodfill(152,262,LIGHTBLUE);
delay(40);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(160,265,"Tanx");
settextstyle(2,0,4);
outtextxy(170,260,"11");
delay(200);
sound(2000);
delay(50);
nosound();
setcolor(BLUE);
setfillstyle(SOLID_FILL,BLUE);
rectangle(150,260,200,290);
floodfill(152,262,BLUE);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(160,265,"Tanx");
settextstyle(2,0,4);
outtextxy(170,260,"11");
}
settextstyle(7,0,1);
setcolor(YELLOW);
outtextxy(300,150,"Step 2:");
setcolor(BLUE);
outtextxy(300,180,"Enter the value of angle");
outtextxy(300,200,"in degree.");
outtextxy(40,105,"tan");
gotoxy(10,8);
flushall();
scanf("%lf",&x);
x = x*22/(7*180);
y = tan(x);
gotoxy(6,9);
printf("= %lf",y);
flushall();break;
case 12:
for(i=0;i<1;i++)
{
setcolor(LIGHTBLUE);
setfillstyle(SOLID_FILL,LIGHTBLUE);
rectangle(210,260,260,290);
floodfill(212,262,LIGHTBLUE);
delay(40);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(230,265,"In");
settextstyle(2,0,4);
outtextxy(230,260,"12");
delay(200);
sound(2000);
delay(50);
nosound();
setcolor(BLUE);
setfillstyle(SOLID_FILL,BLUE);
rectangle(210,260,260,290);
floodfill(212,262,BLUE);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(230,265,"In");
settextstyle(2,0,4);
outtextxy(230,260,"12");
}
settextstyle(7,0,1);
setcolor(YELLOW);
outtextxy(300,150,"Step 2:");
setcolor(BLUE);
outtextxy(300,180,"Enter the value");
outtextxy(40,105,"ln");
gotoxy(10,8);
flushall();
scanf("%lf",&x);
y = log(x);
gotoxy(6,9);
printf("= %lf",y);
flushall();break;
case 13:
for(i=0;i<1;i++)
{
setcolor(LIGHTBLUE);
setfillstyle(SOLID_FILL,LIGHTBLUE);
rectangle(30,300,80,330);
floodfill(32,302,LIGHTBLUE);
delay(40);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(45,305,"log");
settextstyle(2,0,4);
outtextxy(50,300,"13");
delay(200);
sound(2000);
delay(50);
nosound();
setcolor(BLUE);
setfillstyle(SOLID_FILL,BLUE);
rectangle(30,300,80,330);
floodfill(32,302,BLUE);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(45,305,"log");
settextstyle(2,0,4);
outtextxy(50,300,"13");
}
settextstyle(7,0,1);
setcolor(YELLOW);
outtextxy(300,150,"Step 2:");
setcolor(BLUE);
outtextxy(300,180,"Enter the value");
outtextxy(40,105,"log");
gotoxy(10,8);
flushall();
scanf("%lf",&x);
y = log10(x);
gotoxy(6,9);
printf("= %lf",y);
flushall();break;
case 14:
for(i=0;i<1;i++)
{
setcolor(LIGHTBLUE);
setfillstyle(SOLID_FILL,LIGHTBLUE);
rectangle(90,300,140,330);
floodfill(92,302,LIGHTBLUE);
delay(40);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(90,305,"10^x");
settextstyle(2,0,4);
outtextxy(110,300,"14");
delay(200);
sound(2000);
delay(50);
nosound();
setcolor(BLUE);
setfillstyle(SOLID_FILL,BLUE);
rectangle(90,300,140,330);
floodfill(92,302,BLUE);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(90,305,"10^x");
settextstyle(2,0,4);
outtextxy(110,300,"14");
}
settextstyle(7,0,1);
setcolor(YELLOW);
outtextxy(300,150,"Step 2:");
setcolor(BLUE);
outtextxy(300,180,"Enter the value of x");
outtextxy(90,305,"10^x");
gotoxy(10,8);
flushall();
scanf("%lf",&x);
gotoxy(6,9);
printf("= %lf",pow10(x));
flushall();break;
case 15:
for(i=0;i<1;i++)
{
setcolor(LIGHTBLUE);
setfillstyle(SOLID_FILL,LIGHTBLUE);
rectangle(150,300,200,330);
floodfill(152,302,LIGHTBLUE);
delay(40);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(160,305,"x^y");
settextstyle(2,0,4);
outtextxy(170,300,"15");
delay(200);
sound(2000);
delay(50);
nosound();
setcolor(BLUE);
setfillstyle(SOLID_FILL,BLUE);
rectangle(150,300,200,330);
floodfill(152,302,BLUE);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(160,305,"x^y");
settextstyle(2,0,4);
outtextxy(170,300,"15");
}
settextstyle(7,0,1);
setcolor(YELLOW);
outtextxy(300,150,"Step 2:");
setcolor(BLUE);
outtextxy(300,180,"Enter the value of x,y");
gotoxy(6,8);
flushall();
scanf("%lf",&x);
outtextxy(110,105,"^");
gotoxy(18,8);
flushall();
scanf("%lf",&y);
gotoxy(6,9);
printf("= %lf",pow(x,y));
flushall();break;
case 16:
for(i=0;i<1;i++)
{
setcolor(LIGHTBLUE);
setfillstyle(SOLID_FILL,LIGHTBLUE);
rectangle(210,300,260,330);
floodfill(212,302,LIGHTBLUE);
delay(40);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(225,305,"e^x");
settextstyle(2,0,4);
outtextxy(230,300,"16");
delay(200);
sound(2000);
delay(50);
nosound();
setcolor(BLUE);
setfillstyle(SOLID_FILL,BLUE);
rectangle(210,300,260,330);
floodfill(212,302,BLUE);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(225,305,"e^x");
settextstyle(2,0,4);
outtextxy(230,300,"16");
}
settextstyle(7,0,1);
setcolor(YELLOW);
outtextxy(300,150,"Step 2:");
setcolor(BLUE);
outtextxy(300,180,"Enter the value of x");
outtextxy(40,105,"e^");
gotoxy(10,8);
flushall();
scanf("%lf",&x);
y = exp(x);
gotoxy(6,9);
printf("= %lf",y);
flushall();break;
case 17:
for(i=0;i<1;i++)
{
setcolor(LIGHTBLUE);
setfillstyle(SOLID_FILL,LIGHTBLUE);
rectangle(30,340,80,370);
floodfill(32,342,LIGHTBLUE);
delay(40);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(45,345,"Tri");
settextstyle(2,0,4);
outtextxy(50,340,"17");
delay(200);
sound(2000);
delay(50);
nosound();
setcolor(BLUE);
setfillstyle(SOLID_FILL,BLUE);
rectangle(30,340,80,370);
floodfill(32,342,BLUE);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(45,345,"Tri");
settextstyle(2,0,4);
outtextxy(50,340,"17");
}
settextstyle(7,0,1);
setcolor(YELLOW);
outtextxy(300,150,"Step 2:");
setcolor(BLUE);
outtextxy(300,180,"Enter the base and altitude");
gotoxy(6,8);
flushall();
scanf("%d",&base);
gotoxy(25,8);
outtextxy(150,105,"*");
flushall();
scanf("%d",&altitude);
area=(base*altitude)*0.5;
gotoxy(6,9);
printf("=%lf",area);
flushall();break;
case 18:
for(i=0;i<1;i++)
{
setcolor(LIGHTBLUE);
setfillstyle(SOLID_FILL,LIGHTBLUE);
rectangle(90,340,140,370);
floodfill(92,342,LIGHTBLUE);
delay(40);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(100,345,"nPr");
settextstyle(2,0,4);
outtextxy(110,340,"18");
delay(200);
sound(2000);
delay(50);
nosound();
setcolor(BLUE);
setfillstyle(SOLID_FILL,BLUE);
rectangle(90,340,140,370);
floodfill(92,342,BLUE);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(100,345,"nPr");
settextstyle(2,0,4);
outtextxy(110,340,"18");
}
settextstyle(7,0,1);
setcolor(YELLOW);
outtextxy(300,150,"Step 2:");
setcolor(BLUE);
outtextxy(300,180,"Enter the value of n and r");
outtextxy(300,200,"respectively.");
gotoxy(6,8);
flushall();
scanf("%d",&n);
outtextxy(110,105,"P");
gotoxy(18,8);
flushall();
scanf("%d",&r);
b=1;
for(c=1;c<=n;c++)
{
b = b * c;
}
d=1;
a=(n-r);
for(c=1;c<=a;c++)
{
d = d * c;
}
npr = b/d;
gotoxy(6,9);
printf("= %d",npr);
flushall();break;
case 19:
for(i=0;i<1;i++)
{
setcolor(LIGHTBLUE);
setfillstyle(SOLID_FILL,LIGHTBLUE);
rectangle(150,340,200,370);
floodfill(152,342,LIGHTBLUE);
delay(40);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(160,345,"nCr");
settextstyle(2,0,4);
outtextxy(170,340,"19");
delay(200);
sound(2000);
delay(50);
nosound();
setcolor(BLUE);
setfillstyle(SOLID_FILL,BLUE);
rectangle(150,340,200,370);
floodfill(152,342,BLUE);
setcolor(LIGHTGREEN);
settextstyle(6,0,1);
outtextxy(160,345,"nCr");
settextstyle(2,0,4);
outtextxy(170,340,"19");
}
settextstyle(7,0,1);
setcolor(YELLOW);
outtextxy(300,150,"Step 2:");
setcolor(BLUE);
outtextxy(300,180,"Enter the value of n and r");
outtextxy(300,200,"respectively.");
gotoxy(6,8);