Program to find a number is prime or not

/*Program to find a number is  prime or not*/

#include "stdio.h"

#include "conio.h"

void main()

{

int a,b,c=1;

clrscr();

printf("enter the number : ");

scanf("%d",&a);

for(b=2;b<=(a/2);b++)

{

if(a%b==0)

{

c++;

}

}

if(c>1)

{

printf("not prime");

}

else

{

printf("prime ");

}

getch();

}

OUTPUT : -

enter the number : 17

prime

enter the number : 15

not prime

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Random number generation program

#include "STDIO.H"

#include "STDLIB.H"

#include "TIME.H"

int main()

{

int num;

randomize();

//Generating the random number

num = random(99999);

//Printing the random number

printf("%d",num);


return 0;





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Decimal to binary conversion program

#include "stdio.h"

#include "conio.h"

void main()

{

int num[10];

int i=0,digit;

int n;

clrscr();

printf("enter a decimal number\n");

scanf("%d",&n);

while(n!=0)

{

digit=n%2;

num[i]=digit;

i++;

n=n/2;

}

i--;

printf("binary form: ");

while(i>=0)

{

printf("%d",num[i]);

i--;

}

getch();

}

OUTPUT : -
enter a number in decimal form
10

binary form: 1010

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Program to add n digit number e .g 123 = 6 or 4567 = 21 etc

#include "stdio.h''

#include ''conio.h''

main() {

signed long int num,sum=0,digit;

printf("enter digits = ");

scanf("%ld",&num);





while(num%10) {



digit=num%10;

sum+=digit;

num/=10;



}

printf("Digit sum = %ld",sum);

getch();

}

 

 

OUTPUT : -

 

enter digits = 123

Digit sum = 6

 

enter digits = 123456789

Digit sum = 45

 

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Bubble sorting in C

#include "stdio.h"

#include "conio.h"

void main()

{

int arr[100],temp,i,n,j;

clrscr();

printf("\nEnter number of elements in array less Than 100 : ");

scanf("%d",&n);

printf("\n\tEnter The Values into ARRAY ");

for(i=0;i

{

printf("\n\n Enter Element no %d: ",i+1);

scanf("%d",&arr[i]);

}

for(i=0;i

{

for(j=0;j

{

if(arr[j] >arr[j+1])

{

temp=arr[j];

arr[j]=arr[j+1];

arr[j+1]=temp;

}

}

}

printf("\n\n-- Sorted Series --");

for(i=0;i

{

printf("\n \n \t %d",arr[i]);

}

getch();





}
 

OUTPUT : -

 

Enter number of elements in array less than 100 : 5

                   

                            Enter the values into ARRAY

Enter element no 1 : 8

 

Enter element no 2 : -6

 

Enter element no 3 : 0

 

Enter element no 4 : 1

 

Enter element no 5: 9

 

--Sorted Series--

         -6

          0

          1

          8

          9

Program to Create A human face which smiles and cries

#include "graphics.h"


#include "stdlib.h"

#include "stdio.h"

#include "malloc.h"

#include "dos.h"

#include "conio.h"



int xasp,yasp,gdriver = VGA, gmode=VGAMED, errorcode;



struct pos

{

int x;

int y;

};



struct face

{

int radius;

struct pos position;

int mood;

};



typedef struct face face;

face *face1;



void getposition()

{

printf("Enter X Co-ordinate:");

scanf("%d",&face1->position.x);

printf("Enter X Co-ordinate:");

scanf("%d",&face1->position.y);

}



void drawface()

{



char ch='x';

int i=0,x,y,color,r,imgsize,dif;



x=face1->position.x=320;

y=face1->position.y=180;

face1->radius=150;

color=15;

r=face1->radius;



setbkcolor(0);

getaspectratio(&xasp,&yasp);

setcolor(8);

circle(x,y,face1->radius);



setfillstyle(1,color);

floodfill(x,y,getcolor());





draweyes(face1);

drawhair(face1);

drawmouth(face1);

drawnose(face1);





}



drawnose()

{

int i,x,y,r;

x=face1->position.x;

y=face1->position.y;

r=face1->radius;

setcolor(0);



for(i=0;i<2;i++) r="face1-">radius;

x1=face1->position.x-r/2;

y1=face1->position.y-r/4;

x2=face1->position.x+r/2;

y2=face1->position.y-r/4;



setaspectratio(xasp/2,yasp);

arc(x1,y1-r/8,40,140,r/4);//left eyebrow

arc(x1,y1-r/8+1,40,140,r/4);//left eyebrow

arc(x1,y1-r/8+2,40,140,r/4);//left eyebrow

setaspectratio(xasp,yasp);



for(i=0;i<2;i++) i="0;i<2;i++)" x="face1-">position.x;

y=face1->position.y+(face1->radius/1.5);

r=face1->radius;

setcolor(BLACK);



if((face1->mood)==1)

for(i=0;i<4;i++)>mood)==0)

for(i=0;i<4;i++) r="face1-">radius;

x=face1->position.x-r/2;

y=face1->position.y-r/3;



arc(x,y,34,225,100);



arc(x+r,y,314,138,100);



setfillstyle(1,RED);

floodfill(x,y-70,getcolor());

floodfill(x+r,y-70,getcolor());

setaspectratio(xasp,yasp);

}



void main(void)

{

int i=0;

initgraph(&gdriver, &gmode,"");



while(!kbhit())

{

if((i%2)==1)

{

setvisualpage(1);

setactivepage(0);

clearviewport();

face1->mood=0;

drawface();

delay(1000);

}

else

{

setvisualpage(0);

setactivepage(1);

clearviewport();

face1->mood=1;

drawface();

delay(300);

}

i++;

}



getch();

closegraph();

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