Write c program which shutdown the window operating system ?

Write the following program in TURBO C.
void main(void)
{
system("shutdown -s");
}Save the above .Let file name is close.c and compile and execute the above program. Now close the turbo c compiler and open the directory in window you have saved the close.c ( default directory c:\tc\bin) and double click the its exe file(close.exe).After some time your window will shutdown.

read more "Write c program which shutdown the window operating system ?"

Magic Square

Logic 

Assign the numbers in the order 1,2,3... in the matrix in the following pattern.

Put the first number (1) as the middle element in the first row (Let it be i,j). 

Put the next element in the diagonally previous (i-1,j-1) location, if the location is empty.

The rows and columns are considered to be circular, i.e. if i-1 or j-1 comes to a negative value, then highest row or column is taken.

If the location is not empty then put the number in the next row, in the same column(i+1,j), here , rows are considered to be circular.

Continue assigning numbers in this pattern until the matrix is filled (ie n * n times ) */

#include
#define N 10 //Defines the maximum size of the matrix

void main( )
{

int a[N][N]={{0}},i,j,k,n,s,p; //Declaring and initialising the variables

label:

clrscr( );
printf("Enter the size : "); //Reading the size
scanf("%d",&n);

if((n%2==0)||(n>N)) //Validating the input size
{

printf("\n\nThe size must be even and less than %d :Try again\n\n",N);
printf("Press any key to continue ........\n");
getch();
goto label;

}

j=0;
k=n/2;

//Generating the Magic square
for(i=1;i<=n*n;i++)
{

a[j][k]=i;
s=j-1;
p=k-1;

if(s<0)

s=n-1;

if(p<0)

p=n-1;

if(a[s][p]!=0)

j++;

else

{

j=s;
k=p;

}

}

printf("\nThe Magic square is \n\n");
for(i=0;i
{

for(j=0;j

printf(" %2d ",a[i][j]);

printf("\n");

}

getch( );

}

read more "Magic Square"

Decimal, Hex, octal and binary number inter conversion

Introduction

The article discusses about all the number formats viz Binary, Decimal, Octal, Hex and BCD (Binary coded decimal) and conversion from Decimal to Binary, Octal and Hex and also the reverse conversion.

Binary

A numbering system based on 2 in which 0 and 1 are the only available digits.

Decimal

decimal fraction: a proper fraction whose denominator is a power of 10

Octal

A numbering system that uses eight digits, 0 through 7. It is used as a shorthand system for representing binary characters that use six bits.

Hexa Decimal

A numbering system which uses a base of 16. The first ten digits are 0-9 and the next six are A-F.

Binary to Decimal


void Bin2Dec()
{
int bin,n,r,s=0,i;
printf("Enter a binary number\n");
scanf("%d",&bin);
n=bin;
for(i=0;n!=0;i++)
{
r=n%10;
s=s+r*(int)pow(2,i);
n=n/10;
}
printf("The equivalent number of %d is %d\n",bin,s);
}

Octal to Decimal


void Oct2Dec()
{
int oct,n,r,s=0,i;
printf("Enter an octal number\n");
scanf("%d",&oct);
n=oct;
for(i=0;n!=0;i++)
{
r=n%10;
s=s+r*(int)pow(8,i);
n=n/10;
}
printf("The equivalent number of %d is %d\n",oct,s);
}

Hex to Decimal


void Hex2Dec()
{
char hex[N];
int i,j,n[N],l;
long double dec=0;
printf("Enter the hexa decimal number and find it's decimal equivalent\n");
fflush(stdin);
gets(hex);
l=strlen(hex);
for(i=0;i=0;j--)
{
printf("%d",bin[j]);
}
printf("\n");
}

Decimal to Octal


void Dec2Oct()
{
int n,r[10],i;
printf("Enter a number to find it's octal equivalent\n");
scanf("%d",&n);
printf("The octal equivalent of %d is ",n);
for(i=0;n!=0;i++)
{
r[i]=n%8;
n=n/8;
}
i--;
for(;i>=0;i--)
printf("%d",r[i]);
printf("\n");
}

Decimal to Hex


void Dec2Hex()
{
int n,r[10],i;
printf("Enter a number to get its hexadecimal equivalent\n");
scanf("%d",&n);
for(i=0;n!=0;i++)
{
r[i]=n%16;
n=n/16;
}
i--;
for(;i>=0;i--)
{
if(r[i]==10)
printf("A");
else if(r[i]==11)
printf("B");
else if(r[i]==12)
printf("C");
else if(r[i]==13)
printf("D");
else if(r[i]==14)
printf("E");
else if(r[i]==15)
printf("F");
else
printf("%d",r[i]);
}
printf("\n");
}

read more "Decimal, Hex, octal and binary number inter conversion"

Chess Game (Mini Project in C )

C_Projects Source Codes List | Source Code Home
Program : Chess Game Developed in C .
/*
Language: C\C++
Category: Games
Description: It is chess. Two players can play it. \
To simplify the code i have not intriduced the mouse.\
We can play it using Keyboard.I have made this using \
general rules.
*/

#include graphics.h
#include stdlib.h
#include stdio.h
#include iostream.h
#include conio.h
#include ctype.h //For toupper
#include dos.h                //For Delay

int board[8][8],turn=0,count1=0,count2=0;
int gameover();
char strFileName[15];
void printboard();
void wrongStart();
void initialize();
void cleartext();
void check();

//Prototypes
int pawn(int x,int y,int x1,int y1);
int horse(int x,int y,int x1,int y1);
int rook(int x,int y,int x1,int y1);
int bishop(int x,int y,int x1,int y1);
int queen(int x,int y,int x1,int y1);
int king(int x,int y,int x1,int y1);

void main()
{

//Graphics Initialization
int gdriver = DETECT;
int gmode;
initgraph(&gdriver,&gmode,"e:\\borlandc\\bgi");

//Loading Intro
for(float i=0; i<=6;i=i+0.1)
{
setcolor(12);
settextstyle(4,HORIZ_DIR,i);
outtextxy(50,120,"WELCOME TO THE CHESS");
delay(30);
cleardevice();
}
outtextxy(50,120,"WELCOME TO THE CHESS");
settextstyle(1,HORIZ_DIR,3);
getch();
cleardevice();

//Displaying Group Members
setcolor(CYAN);
outtextxy(50,220,"Designed by:");
setcolor(6);
outtextxy(50,250,"Atif Zia Khan");

//Displaying Roll Numbers
outtextxy(350,250,"L1F01BSCS0144");
getch();
cleardevice();
cleardevice();

settextstyle(1,HORIZ_DIR,2);
setcolor(12);
outtextxy(50,10,"During the game Press:\n");
outtextxy(50,10,"______________________\n");


setcolor(6);
settextstyle(1,HORIZ_DIR,1.5);
outtextxy(50,60,"F2 to save file\n");
outtextxy(50,80,"F3 to load file\n");
outtextxy(50,100,"ESC to exit game\n");
outtextxy(50,120,"U to undo selection\n");
outtextxy(50,200,"\nPress any key to play ");
getch();
cleardevice();


cleartext();
initialize();
char ch;
int x=-1,y=-1,x1=-1,y1=-1;
setcolor(9);
outtextxy(10,400,"Player 1");
for(;;)
{
       int game;
 game=gameover();
   if(game==0)
   {
 break;
   }
FILE *fp;
ch=getch();
if(ch==0){
 ch=getch();
if(ch=='<'){


     //////SAVE/////

  for(;;)
  {
      
cout<<"\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\
\b\b\bEnter File name to save \n";
cin>>strFileName;  //Enter File Name
fp=fopen(strFileName,"r+");
if(fp!=NULL)
{
cout<<"File already exist\n";
}
else
{
   fp=fopen(strFileName,"w+");
   if(fp==NULL)
   {
   cout<<"Invalid File Name\n";
   }
   else
break;
}
  }//end for
fprintf(fp,"%d\n",turn);
for(int i=0;i<8;i++)
{
for(int j=0;j<8;j++)
  {
fprintf(fp,"%d\n",board[i][j]);
  }
}
fclose(fp);
cleartext();
x=-1;
y=-1;
x1=-1;
y1=-1;
continue;
}

if(ch=='=')
{
////Load/////


for(;;)
{

cout<<"\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\
\b\b\b\b\bEnter File name to Load \n";
  cin>>strFileName;
  fp=fopen(strFileName,"r+");
   if(fp==NULL)
   {
 cout<<"File does not exist\n";
   }
   else
   {
break;
   }
}//end for
 fscanf(fp,"%d",&turn);
   for(int i=0;i<8;i++){
     for(int j=0;j<8;j++){
       fscanf(fp,"%d",&board[i][j]);
}
}
fclose(fp);
printboard();
cleartext();
x=-1;
y=-1;
x1=-1;
y1=-1;
setcolor(0);
outtextxy(10,400,"Player Û");
if(turn!=0){
check();
setcolor(2);
outtextxy(10,400,"Player 2");
}
else{
check();
setcolor(9);
outtextxy(10,400,"Player 1");
}
  continue;
  }
}

if(ch==27){
break;
}
else if(ch=='u'||ch=='U'){
x=-1;
x1=-1;
y1=-1;
y=-1;
cleartext();
continue;
}
if(x==-1){
ch=toupper(ch);
if(ch>=65 && ch<=72){
cout<
x=ch-65;
}
}
else if(y==-1)
{
if(ch>='1' && ch<='8')
{
cout<
y=ch-'1';
if(board[y][x]==0){
wrongStart();
x=-1;
y=-1;
}
else
{
if(turn==0)
{
if(board[y][x]<0)   
  //if Player 1 has selected a piece of Player 2
{
wrongStart();
x=-1;
y=-1;
}
}
else if(turn!=0)
{
if(board[y][x]>0)
{
wrongStart();
x=-1;
y=-1;
}
}
}
}
if(x!=-1 && y!=-1)
cout<<"\nenter final position  ¯ ";
}
else if(x1==-1)
{ //Converting lower to upper case

ch=toupper(ch);
if(ch>=65 && ch<=72)
{
cout<
x1=ch-65;
}
}
else if(y1==-1)
{
if(ch>='1' && ch<='8')
{
cout<
y1=ch-'1';
}
int b=0,killed=0;

/////pawn/////

     if(abs(board[y][x])>=9 &&
abs(board[y][x])<=16){ //if piece selscted has value greater than 8
and less than 17
b = pawn(x,y,x1,y1);
}//end pawn

//////horse//////

      else if(abs(board[y][x])==2 ||
abs(board[y][x])==7){    //if piece selscted has value 2 and 7
b = horse(x,y,x1,y1);
}//end horse

////queen///

      else if(abs(board[y][x])==4){ ////if piece
selscted has value 4
b = queen(x,y,x1,y1);
}//end queen
///king///

      else if(abs(board[y][x])==5){ //if piece
selscted has value 5
b = king(x,y,x1,y1);
 }//end king

///rook///

      else if(abs(board[y][x])==1 ||
abs(board[y][x])==8){    //if piece selscted has value 1 and 8
b = rook(x,y,x1,y1);
}//end rook

///bishop///

      else if(abs(board[y][x])==3 ||
abs(board[y][x])==6){    //if piece selscted has value 3 and 6
b = bishop(x,y,x1,y1);
}//end bishop

if(b==2){
  if(abs(board[y][x])>=9 && abs(board[y][x])<=16){
     char pp;
   
cout<<"\n\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\
\bwhich piece Q,R,H,B";
      pp=getch();
      if(turn==0){
       if(pp=='r')
board[y1][x1]=1;
       else if(pp=='h')
board[y1][x1]=2;
       else if(pp=='b')
board[y1][x1]=3;
       else if(pp=='q')
board[y1][x1]=4;
       }
      else{
       if(pp=='r')
board[y1][x1]=-1;
       else if(pp=='h')
board[y1][x1]=-2;
       else if(pp=='r')
board[y1][x1]=-3;
       else if(pp=='q')
board[y1][x1]=-4;
}

       board[y][x]=0;
       killed =1;
}
  else if(abs(board[y][x])==5){
     if(board[y][x]==5){
       if(count1==1);
 wrongStart();}
     else if(board[y][x]==-5){
       if(count1==1);
 wrongStart();}
     else{
       board[y][x+1]=board[y1][x1];
       board[y][x+2]=board[y][x];
       board[y1][x1]=0;
       board[y][x]=0;
       killed=1;
}
}
      printboard();
     }
else if(b==1)
{
if(turn==0)
{
if(board[y1][x1]<0)
{
board[y1][x1]=board[y][x];
board[y][x] = 0;
killed=1;
}
}
if(turn!=0)
{
if(board[y1][x1]>0)
{
board[y1][x1]=board[y][x];
board[y][x] = 0;
killed=1;
}
}
if(board[y1][x1]==0)
{
int temp=board[y][x];
board[y][x]=board[y1][x1];
board[y1][x1]=temp;
killed=1;
}
printboard();
}
x=-1;
y=-1;
x1=-1;
y1=-1;
      setcolor(0);
      outtextxy(30,340,"Check");
if(killed==0){
wrongStart();
continue;
}
cleartext();
setcolor(0);
outtextxy(10,400,"Player Û");
if(turn==0){
check();
turn=1;
setcolor(2);
outtextxy(10,400,"Player 2");
}
else{
check();
turn=0;
setcolor(9);
outtextxy(10,400,"Player 1");
}
}//end legal move
}//end for
}//end main

void printboard(){
for(int i=0;i<8;i++){
for(int j=0;j<8;j++){
if((i+j)%2==0)
setcolor(WHITE);
else
setcolor(BLACK);

outtextxy(270+(j*45),105+(i*45),"ÛÛ");


if(board[i][j]<0)
setcolor(GREEN);
else if(board[i][j]>0)
setcolor(9);

if(abs(board[i][j])>=9 && abs(board[i][j])<=16){
  outtextxy(270+(j*45),105+(i*45),"P");}

else if(abs(board[i][j])==1 || abs(board[i][j])==8){
  outtextxy(270+(j*45),105+(i*45),"R");}

else if(abs(board[i][j])==2 || abs(board[i][j])==7){
  outtextxy(270+(j*45),105+(i*45),"H");
  }
else if(abs(board[i][j])==3 || abs(board[i][j])==6){
  outtextxy(270+(j*45),105+(i*45),"B");
  }
else if(abs(board[i][j])==4){
  outtextxy(270+(j*45),105+(i*45),"Q");
  }
else if(abs(board[i][j])==5){
  outtextxy(270+(j*45),105+(i*45),"K");
  }
}
}
}
void wrongStart()
{
cout<<"\nWrong Input\nPress any key to continue...";
char ch=getch();
if(ch==0){
getch();
}
for(int i=1;i<=30;i++)
for(int j=1;j<=4;j++)
{
gotoxy(i,j);
cout<<" ";
}
gotoxy(1,1);
cout<<"enter initial position ¯ ";
}

/////ClearText////void cleartext(){
for(int i=1;i<=27;i++)
for(int j=1;j<=8;j++){
gotoxy(i,j);
cout<<" ";
}
gotoxy(1,1);
cout<<"enter initial position ¯ ";
}

/////Initialize////

void initialize(){
  setcolor(WHITE);
  rectangle(250,90,610,450);

  // Board Printing
  for (int i=250;i<560;i+=90)
for (int j=90;j<450;j+=90)
 {
 bar(i,j,i+45,j+45);
 bar(i+45,j+45,i+90,j+90);
 }

   //Asigning the Values in the empty spaces
   for(i=2;i<=5;i++)
for(int j=0;j<=7;j++)
 board[i][j] = 0;

for(int j=0;j<=7;j++)
{
 board[0][j] = j+1;
 board[1][j] = j+9;      //Pawns for player 1
 board[7][j] = 0-(j+1);
 board[6][j] = 0-(j+9);  //Pawns for player 2
 }
printboard();

setcolor(YELLOW);

  outtextxy(265,55,"A");
  outtextxy(310,55,"B");
  outtextxy(355,55,"C");
  outtextxy(400,55,"D");
  outtextxy(445,55,"E");
  outtextxy(490,55,"F");
  outtextxy(535,55,"G");
  outtextxy(580,55,"H");

  outtextxy(220,105,"1");
  outtextxy(220,150,"2");
  outtextxy(220,195,"3");
  outtextxy(220,240,"4");
  outtextxy(220,285,"5");
  outtextxy(220,330,"6");
  outtextxy(220,375,"7");
  outtextxy(220,420,"8");
}


////HORSE//////

int horse(int x,int y,int x1,int y1)
{
int a=0;
if((y1==y+2 && x1==x+1)||(y1==y+2 && x1==x-1)||(y1==y+1 &&
x1==x+2)||(y1==y+1 && x1==x-2)||(y1==y-1 && x1==x+2)||(y1==y-1 &&
x1==x-2)||(y1==y-2 && x1==x+1)||(y1==y-2 && x1==x-1)){
a = 1;
}
return a;
}

/////KING////

int king(int x,int y,int x1,int y1)
{
     int a = 0;
     if((y1==y+1 && x1==x)||(y1==y-1 && x1==x)||(y1==y+1 &&
x1==x+1)||(y1==y+1 && x1==x-1)||(y1==y-1 && x1==x+1)||(y1==y-1 &&
x1==x-1)||(y1==y && x1==x+1)||(y1==y && x1==x-1)){
a = 1;
}
/////CASTLING//////

     else
if(board[y][x+1]==0&&board[y][x+2]==0&&(abs(board[y1][x1])
==abs(board[y][x+3])==1||abs(board[y1][x1])==
abs(board[y][x+3])==8)){

      return 2;
     }
if(a==1)
{
 if(board[y][x]==5)
 count1=1;
 if(board[y][x]==-5)
 count2=1;
}
return a;
}

//////BISHOP/////

int bishop(int x,int y,int x1,int y1)
{
int a=1,i;
if(abs(x1-x)!=abs(y1-y))
{
a=0;
}

if((x
{
for(i=1;(i+x)
{
 if(board[y+i][x+i]!=0)
 a=0;
}
}

       else if((x>x1)&&(y>y1)){
for(i=1;(x-i)>x1;i++){
 if(board[y-i][x-i]!=0)
    a=0;
 }
}
else if((x>x1)&&(y
 for(i=1;(x-i)>x1;i++){
  if(board[y+i][x-i]!=0)
    a=0;
 }
}
else if((xy1)){
for(i=1;(y-i)>y1;i++){
 if(board[y-i][x+i]!=0)
    a=0;
 }
}
return a;
}


////////QUEEN///////
int queen(int x,int y,int x1,int y1){
   if(x==x1||y==y1){              
  //if queen moves in + direction
 return rook(x,y,x1,y1);
   }
   else if(abs(x1-x)==abs(y-y1)){
  //if queen moves in diagnol
direction
 return bishop(x,y,x1,y1);
   }
   else
 return 0;
}


///ROOK////
int rook(int x,int y,int x1,int y1){
int a=1;
if(y1==y)
{
for(int i=x+1;i
{
if(board[y1][i]!=0)
{
a = 0;
break;
}
}
for(i=x-1;i>x1;i--)
{
if(board[y1][i]!=0)
{
a = 0;
break;
}
}
}
else if(x1==x)
{
for(int i=y+1;i
{
if(board[i][x1]!=0)
{
a = 0;
break;
}
}
for(i=y-1;i>y1;i--)
{
if(board[i][x1]!=0)
{
a = 0;
break;
}
}
}
else
{
a=0;
}
return a;
}


///PAWN/////
int pawn(int x,int y,int x1,int y1){
int a=0;
if(turn==0){
if(y==1){
  if(y1==(y+2) && x1==x){
if(board[y1][x1]==0&&board[y+1][x]==0){
a = 1;
   }
}
}
 if(y1==y+1 && x1==x){
if(board[y1][x1]==0){
a = 1;
}
 }
   else if(y1==(y+1) && (x1==(x+1)||x1==(x-1))){
   if(board[y1][x1]<0){
 a = 1;
 }
  }
}
  else if(turn==1){
if(y==6){
   if( y1==(y-2) && x1==x){
if(board[y1][x1]==0&&board[y-1][x]==0){
a = 1;
   }
}
      }
  if( y1==(y-1) && x1==x){
if(board[y1][x1]==0){
a = 1;
}
 }
   else if(y1==(y-1) && (x1==(x-1)||x1==(x+1))){
   if(board[y1][x1]>0){
 a = 1;
 }
  }
 }
   if(a==1)
   {
     if(turn==0)
     {
 if(y1==7)
 return 2;
     }
     else
     {
if(y1==0)
return 2;
     }
    }
 return a;
}

////////Check////////


void check()
{
  int t=0,i,j,x1,y1;
   if(turn==0){
     for(i=0;i<=7;i++)
     {
 for(j=0;j<=7;j++)
 {
if(board[i][j]==-5)
{
 y1=i; x1=j;
  break;
}
  }
     }
       for(j=0;j<=7;j++){
for(i=0;i<=7;i++){
 if (t==1){
    setcolor(9);
    rectangle(20,335,100,365);
    outtextxy(30,340,"Check");
    break;
   }

 if(board[j][i]>=9 && board[j][i]<=16)
t = pawn(i,j,x1,y1);
 else if(board[j][i]==2 || board[j][i]==7)
t = horse(i,j,x1,y1);
 else if(board[j][i]==4)
t = queen(i,j,x1,y1);
 else if(board[j][i]==1 || board[j][i]==8)
t = rook(i,j,x1,y1);
 else if(board[j][i]==3 || board[j][i]==6)
t = bishop(i,j,x1,y1);

}// for
       }//  for
     }//endif turn
    else {
     for(i=0;i<=7;i++){
      for(j=0;j<=7;j++){
       if(board[i][j]==5){
 y1=i; x1=j;
  break;
      }
  }
       }
       for(j=0;j<=7;j++){
for(i=0;i<=7;i++){
 if (t==1){
    setcolor(GREEN);
     rectangle(20,335,100,365);
    outtextxy(30,340,"Check");
    break;
   }

 if(board[j][i]>=(-9) && board[j][i]<=(-16))
t = pawn(i,j,x1,y1);
 else if(board[j][i]==(-2) || board[j][i]==(-7))
t = horse(i,j,x1,y1);
 else if(board[j][i]==(-4))
t = queen(i,j,x1,y1);
 else if(board[j][i]==(-1) || board[j][i]==(-8))
t = rook(i,j,x1,y1);
 else if(board[j][i]==(-3) || board[j][i]==(-6))
t = bishop(i,j,x1,y1);

}// for
       }//  for
 }// end else
}


//////GAME OVER/////
int gameover(){
int i,j,a=0,b=0;

for(i=0;i<=7;i++)
{
for(j=0;j<=7;j++)
{
       if(board[i][j]==5)
       b=1;
       if(board[i][j]==-5)
       a=1;
}
}
if(b==0)
{
       setcolor(12);
       outtextxy(30,340,"Game Over");
               setcolor(GREEN);
       outtextxy(30,300,"Player 1 Loses");
       getch();
       return 0;
}
else if(a==0)
{
setcolor(9);
outtextxy(30,340,"Game Over");
outtextxy(30,300,"Player 2 Loses");
getch();
return 0;
}
return 1;
}

read more "Chess Game (Mini Project in C )"