The document contains various source codes for different calculators and utilities developed by Rahul Saini, a first-year Bachelor of Computer Applications student at Dezyne E'cole College. These include an ASCII code calculator, decimal to binary converter, standard calculator, and palindrome checker, among others. Each code example provides functionality related to mathematical operations and character processing.

1. Rahul Saini
Bachelor of Computer
Application 1st Year
Dezyne E’cole College
www.dezyneecole.com
ASCII Code Calculator
ASCII Code Calculator
void main()
{
char c,d;
clrscr();
printf("t enter a character::::");
c=getchar();
printf("nnt ASCII code is ::::%d",c);
printf("nndo you want to continue ...
press1.... else 0");
d=getch();
if(d==1)
{
main();
}
else
{
exit(0);
}
getch();
}
Source Code
1

2. void main()
{
long int n,i,c,d;
clrscr();
printf("Enter your number::");
scanf("%ld",&n);
printf("your number is::%ldn",n);
i=1;
while(i<=10)
{
c=i*n;
printf("%ld*%ld=%ldn",n,n,i,d);
i++;
}
printf("nn do yo want to contiune
...press1..else0..");
d=getch();
if(d=='1')
{
main();
}
else
{
exit(0);
}
getch();
}
Table Calculator
Table Calculator
Source Code
Rahul Saini
Bachelor of Computer
Application 1st Year
Dezyne E’cole College
www.dezyneecole.com
2

3. Decimal To Binary Calculator
void main()
{
int[20],c=0,n,m=0,i,d;
clrscr();
printf("enter a decimal number
between (1- 32767):");
scanf("%d",& n);
while(n>0)
{
m=n%2;
a[c]=m;
n=n/2;
c++;
}
c--;
for(i=c;i>=0;i--);
{
printf("%d",a[i]);
}
getch();
}
Decimal to Binary calculator
Source Code
Rahul Saini
Bachelor of Computer
Application 1st Year
Dezyne E’cole College
www.dezyneecole.com
3

4. Standard Calculator
Standard Calculator
void main()
{
int a,b,c;
char r,o;
clrscr();
printf("Standard Calculator.n");
gotoxy(10,4);
scanf("%d",&a);
gotoxy(15,4);
o=getche();
gotoxy(20,4);
scanf("%d",&b);
if(o=='+')
{
c=a+b;
}
if(o=='-')
{
c=a-b;
}
if(o=='*')
{
c=a*b;
}
if(o=='/')
{
c=a/b; }
gotoxy(15,8);
printf("%d",c);
getch();
}
Source Code
Rahul Saini
Bachelor of Computer
Application 1st Year
Dezyne E’cole College
www.dezyneecole.com
4

5. Color Grid Printer
Color Grid Printer
void main()
{
int i,j,d;
clrscr();
for(i=1;i<=600;i++)
{
if(i%40==0)
{
printf("n");
}
else
{
textbackground(j);
cprintf(" ");
j++;
}
if(j==7)
{
j=1;
}
}
getch();
}
Source Code
Rahul Saini
Bachelor of Computer
Application 1st Year
Dezyne E’cole College
www.dezyneecole.com
5

6. Power calculator
Power Calculator
void main()
{
int n,p,s,i,e;
clrscr();
gotoxy(10,2);
printf("number");
gotoxy(10,4);
scanf("%d",&n);
gotoxy(20,2);
printf("power");
gotoxy(20,4);
scanf("%d",&p);
s=1;
for(i=1;i<=p;i++)
{
s=s*n;
}
gotoxy(15,6);
printf("%d",s);
getch();
}
Source Code
Rahul Saini
Bachelor of Computer
Application 1st Year
Dezyne E’cole College
www.dezyneecole.com
6

7. Palindrome Calculator
Palindrome Calculator
void num_palin()
{
int n,p=0,t,m;
clrscr();
printf("enter a number==");
scanf("%d",&n);
t=n;
while(t>0)
{
m-t%10;
p=p*10+m;
t=t/10;
}
if(p==n)
{
printf("palindrome");
}
else
{
printf("not
palindrome");
}
}
void main()
{
num_palin();
getch();
}
Source Code
Rahul Saini
Bachelor of Computer
Application 1st Year
Dezyne E’cole College
www.dezyneecole.com
7

8. Alphabet Calculator
void main()
{
int i,j,r;
char c;
clrscr();
printf("alphabet in upercase press1..n
alphabet in lowercase press 2");
c=getch();
printf("nnn");
if(c=='1') [
printf("your case is uppercase
nnn");
for(j=65;j<=90;j++)
{
delay(50);
printf("%c
t",j);
}
}
else if(c=='2') {
printf("your case is lowercase
nnn");
for(j=97;j<=122;j++)
{
delay(50);
printf("%c
t",j);
}
}
else {
printf("wrong input"); }
Source Code
Alphabet Calculator
Rahul Saini
Bachelor of Computer
Application 1st Year
Dezyne E’cole College
www.dezyneecole.com
8

9. Armstrong Calculator
void main()
{
int n,t,t1,p=0,i,c=0,m=0,a=0,w;
clrscr();
printf("enter a limit::");
scanf("%d",&n);
for(i=1;i<=1;i++)
{
i++; }
n=i;
t=n;
t1=n;
c=0;
m=0;
a=0;
p=0;
i=0;
while(t1>0)
{
i++;
t1=t1/10;
}
while(t>0)
{
m=t%10;
p=pow(m,i);
a=a+p;
t=t/10;
}
}
Armstrong Calculator
Source Code
Rahul Saini
Bachelor of Computer
Application 1st Year
Dezyne E’cole College
www.dezyneecole.com
9

10. Prime Number Calculator
Prime number calculator
void main()
{
int i,n,c=0;
clrscr();
printf("enter a number=");
scanf("%d",&n);
for(i=1;1<=n;i++)
{
if(n%i==0)
{
c++;
}
}
if(c==1||c==2)
{
printf("prime");
}
else
{
printf("not prime");
}
getch();
}
Source Code
Rahul Saini
Bachelor of Computer
Application 1st Year
Dezyne E’cole College
www.dezyneecole.com
10

11. Text Printer
void main()
{
char a[]="This is Dezyne E'cole College";
int i,l,g=1,m;
clrscr();
l=strlen(a);
for (i=0,i<1;i++);
{
delay(300);
textcolor(g);
cprintf("%c",a[1]);
if(g=5)
{
g=1;
}
g++;
}
printf("nn do you want to continue press 1...else 0");
m=getch();
if(m=='1')
{
main();
}
else
{
exit(0);
}
getch();
}
Text Printer
Source Code
Rahul Saini
Bachelor of Computer
Application 1st Year
Dezyne E’cole College
www.dezyneecole.com
11