/*Q31 C Program for Pascal triangle */
#include <stdio.h>
long factorial(int);
void main()
{
int
i, n, c;
printf("Enter the number of rows you
wish to see in pascal triangle\n");
scanf("%d",&n);
for (i = 0; i < n; i++)
{
for
(c = 0; c <= (n - i - 2); c++)
printf(" ");
for
(c = 0 ; c <= i; c++)
printf("%ld ",factorial(i)/(factorial(c)*factorial(i-c)));
printf("\n");
}
getch();
}
long factorial(int n)
{
int c;
long result = 1;
for (c = 1; c <= n; c++)
result = result*c;
return result;
}
Output:
Enter the number of rows you wish to see
in pascal triangle
5
1
1
1
1 2 1
1 3 3 1
1 4 6 4 1
/*Q3 program to find the total and average of marks in
an array*/
#include<stdio.h>
#include<conio.h>
void main()
{
int marks[7],i,total=0;
float avg;
clrcsr();
printf("Enter marks of 7
subjects\n");
for(i=0;i<7;i++)
scanf("%d",&marks[i]);
for(i=0;i<7;i++)
total=total+marks[i];
avg=(float)total/7;
printf("\n Total marks : %d", total);
printf("\n Average of marks
: %f",avg);
getch();
}
Output:
Enter marks of 7 subjects
65
75
85
95
60
70
80
Total Marks : 530
Average of marks : 75.714287
/*Q9 program to find the sum of the exponential
series 1 + x + x2/2! + x3/3! + ....*/
#include<stdio.h>
#include<conio.h>
void main()
{
int n,i;
float x,sum=1.0,t=1.0;
clrcsr();
printf("Enter x value of
the series\n");
scanf("%f",&x);
printf("Enter n value of
the series for number of terms\n");
scanf("%d",&n);
for(i=1;i<=n;i++)
{
t=(t*x)/i;
sum=sum+t;
}
printf("\nSum of the
exponential series is : %f\n", sum);
getch();
}
Output:
Enter x value of the series
1.2
Enter n value of the series for
number of terms
5
Sum of the exponential series is :
3.315136
/* Q11 Calculate
grades of N students from 3 tests using arrays*/
#include<stdio.h>
#include<conio.h>
void main()
{
int n,subj[70],i,j,tot;
float avg;
clrscr():
printf("\nEnter n value for number of
students\n");
scanf("%d",&n);
for(i=1;i<=n;i++)
{
tot=0;
printf("\n Enter 3 Subjects marks of
student[%d]:\n",i);
for(j=0;j<3;j++)
scanf("%d",&subj[j]);
for(j=0;j<3;j++)
tot=tot+subj[j];
avg=tot/3.0;
if(avg>=75)
printf("\nGrade : A+");
else if((avg<75)&&(avg>=60))
printf("\nGrade : A");
else if((avg<60)&&(avg>=50))
printf("\nGrade : B");
else if((avg<50)&&(avg>=40))
printf("\nGrade : C");
else
printf("\nGrade : D");
}
getch();
}
Output:
Enter n value for number of students
2
Enter 3 Subjects marks of student[1]:
60
70
80
Grade : A
Enter 3 Subjects marks of student[2]:
80
50
40
Grade : B
/*Q12 C program to find the trace of a matrix (sum of
diagonal elements)*/
#include<stdio.h>
#include<conio.h>
void main()
{
int matrix[3][3],i,j,sum=0;
clrscr():
printf("\nEnter 9 matrix elements\n");
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
scanf("%d",&matrix[i][j]);
}
}
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
if(i==j)
sum=sum+matrix[i][j];
}
}
printf("\n The trace of a matrix is : %d", sum);
getch();
}
Output:
Enter 9 matrix elements
1
2
3
1
2
3
1
2
3
The trace of a matrix is : 6
/* Q15 C program to generate fibonacci series*/
#include<stdio.h>
#include<conio.h>
void main()
{
int n,i,f1=0,f2=1,fn;
clrscr():
printf("\nEnter n value for generating number of fibonacci
values\n");
scanf("%d",&n);
printf("\n The Fibonacci Series : \n”);
printf("\n 0\n 1");
for(i=2;i<n;i++)
{
fn=f1+f2;
printf("\n %d",fn);
f1=f2;
f2=fn;
}
getch();
}
Output:
Enter n value for generating number
of fibonacci values
6
The Fibonacci Series :
0
1
1
2
3
5
/* Q16 C program for transpose of a matrix */
#include<stdio.h>
#include<conio.h>
void main()
{
int matrix[3][3],i,j;
clrscr():
printf("\nEnter 9 matrix elements\n");
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
scanf("%d",&matrix[i][j]);
}
}
printf(" \n The given matrix :\n");
for(i=0;i<3;i++)
{
printf("\n");
for(j=0;j<3;j++)
{
printf(" %d", matrix[i][j]);
}
}
printf(" \n Transpose of a matrix :\n");
for(i=0;i<3;i++)
{
printf("\n");
for(j=0;j<3;j++)
{
printf(" %d", matrix[j][i]);
}
}
getch();
}
Output:
Enter 9 matrix elements
1
2
3
1
2
3
1
2
3
The given matrix :
1
2
3
1 2 3
1
2 3
Transpose of a matrix :
1
1 1
2
2 2
3
3 3
/* Q17 C program for Tower of Hanoi using Recursion */
#include <stdio.h>
#include <conio.h>
void towers(int, char, char, char);
void main()
{
int num;
clrscr();
printf("Enter the number of disks : ");
scanf("%d", &num);
printf("The sequence of moves involved in the Tower of Hanoi are :\n");
towers(num, 'A', 'C', 'B');
getch();
}
void towers(int num, char frompeg, char topeg, char auxpeg)
{
if (num == 1)
{
printf("\n Move disk 1 from peg %c to peg %c", frompeg, topeg);
return;
}
towers(num - 1, frompeg, auxpeg, topeg);
printf("\n Move disk %d from peg %c to peg %c", num, frompeg, topeg);
towers(num - 1, auxpeg, topeg, frompeg);
}
Output:
Enter
the number of disks :
3
The
sequence of moves involved in the Tower of Hanoi are :
Move disk 1 from peg A to peg C
Move disk 2 from peg A to peg B
Move disk 1 from peg C to peg B
Move disk 3 from peg A to peg C
Move disk 1 from peg B to peg A
Move disk 2 from peg B to peg C
Move disk 1 from peg A to peg C
/*Q19 program to reverse the given number &
check if the number is palindrome*/
#include<stdio.h>
#include<conio.h>
void main()
{
int num, rev=0, temp,rem;
clrscr();
printf("\n Enter an integer number : \n");
scanf("%d",&num);
temp=num;
while(num>0)
{
rem=num%10;
rev=(rev*10)+rem;
num=num/10;
}
if(temp==rev)
printf("\n The number is palindrome");
else
printf("\n The number is NOT a palindrome");
getch();
}
Output:
Enter an integer number :
234
The number is NOT a palindrome
Enter an integer number :
232
The number is a palindrome
/* Q 21 Program to find the no. of words,
lines, characters and special characters*/
#include<stdio.h>
#include<conio.h>
void main()
{
int w=0, lin=0, spc=0, c=0;
char ch;
clrscr();
printf("\n Enter text - At
the end of the text press Ctrl+Z keys and press enter key\n");
while((ch=getchar())!=EOF)
{
if
(ch==' ')
w++;
else
if (ch=='\n')
{
lin++;
w++;
}
else
if(((ch>=65)&&(ch<=90))||((ch>=97)&&(ch<=122)))
c++;
else
spc++;
}
printf("\n \nNo. of Words: %d\n No. of Lines: %d\n No. of Characters:
%d\n No. of Special Characters: %d",w,lin,c,spc);
getch();
}
OUTPUT:
Enter text - At the end of the text press Ctrl+Z keys and press
enter key
St. PiousX Degree & P.G College
For Women
Snehapuri Coloney
Nacharam
^Z
No. of Words: 11
No. of Lines: 3
No. of Characters: 55
No. of Special Characters: 2
/* Q 28 Program to swap2 numbers without using
3rd variable */
#include<stdio.h>
#include<conio.h>
void main()
{
int a,b;
clrscr();
printf("\n Enter two values for swapping\n");
scanf("%d%d",&a,&b);
printf("\n Values before swapping :\n a=%d \t b=%d \n",a,b);
a=a+b;
b=a-b;
a=a-b;
printf("\n Values after swapping :\n a=%d \t b=%d \n",a,b);
getch();
}
OUTPUT:
Enter two values for swapping
5
10
Values before swapping :
a=5 b=10
Values after swapping :
a=10 b=5
/* Q29 Program to add, subtract, multiply and divide
two numbers using functions */
#include<stdio.h>
#include<conio.h>
void
add(int x, int y)
{
printf("\n SUM : %d",x+y);
}
void
sub(int x, int y)
{
printf("\n DIFFERENCE :
%d",x-y);
}
void
mul(int x, int y)
{
printf("\n PRODUCT : %d",x*y);
}
void
div(int x, int y)
{
printf("\n QUOTIENT :
%d",x/y);
}
void main()
{
clrscr();
printf("\n The given numbers are x = 10
& y = 5\n");
add(10,5);
sub(10,5);
mul(10,5);
div(10,5);
getch();
}
OUTPUT:
The given
numbers are x = 10 & y = 5
SUM : 15
DIFFERENCE
:5
PRODUCT :50
QUOTIENT :2
/* Q 30 program to generate prime
numbers till the given number*/
#include<stdio.h>
#include<conio.h>
void main()
{
int n,j,i,ch;
clrscr();
printf(" Enter the number to generate
prime numbers\n");
scanf("%d", &n);
printf("\n The list of Prime Numbers
Less than %d are :",n);
printf("\n\t2\n\t3"); // first two prime numbers
for(i=4;i<=n;i++) //
generating next prime numbers
{
ch=1;
for(j=2;j<=i/2;j++)
if(i%j==0)
ch=0;
if(ch==1)
printf("\n\t%d",i);
}
getch();
}
OUTPUT:
Enter the number to generate prime numbers
10
The list of Prime Numbers Less than %d are :
2
3
5
7
/* Q 41 program to convert number from one base to any other
base(2,8,10,16)
*/
#include<stdio.h>
#include<conio.h>
long signed int other_to_decimal(long signed int,long signed int);
long signed int decimal_to_other(long signed int,long signed int);
void main()
{
long signed int inputbase,outputbase,inputnumber,outputnumber,s;
clrscr();
printf("Enter the number and its base:");
scanf("%ld%ld",&inputnumber,&inputbase);
printf("Enter the base you want to convert the number to:");
scanf("%ld",&outputbase);
if(outputbase==10)
{
outputnumber=other_to_decimal(inputnumber,inputbase);
}
else
{
if(inputbase==10)
{
outputnumber=decimal_to_other(inputnumber,outputbase);
}
else
{
s=other_to_decimal(inputnumber,inputbase);
outputnumber=decimal_to_other(s,outputbase);
}
}
printf("The converted number is %ld",outputnumber);
getch();
}
long signed int other_to_decimal(long signed int inputnumber,long signed int inputbase)
{
long signed int k,op,s,p;
#include<stdio.h>
#include<conio.h>
long signed int other_to_decimal(long signed int,long signed int);
long signed int decimal_to_other(long signed int,long signed int);
void main()
{
long signed int inputbase,outputbase,inputnumber,outputnumber,s;
clrscr();
printf("Enter the number and its base:");
scanf("%ld%ld",&inputnumber,&inputbase);
printf("Enter the base you want to convert the number to:");
scanf("%ld",&outputbase);
if(outputbase==10)
{
outputnumber=other_to_decimal(inputnumber,inputbase);
}
else
{
if(inputbase==10)
{
outputnumber=decimal_to_other(inputnumber,outputbase);
}
else
{
s=other_to_decimal(inputnumber,inputbase);
outputnumber=decimal_to_other(s,outputbase);
}
}
printf("The converted number is %ld",outputnumber);
getch();
}
long signed int other_to_decimal(long signed int inputnumber,long signed int inputbase)
{
long signed int k,op,s,p;
op=0;
k=inputnumber;
p=1;
while(k!=0)
{
s=k%10;
k=k/10;
op=op+s*p;
p=p*inputbase;
}
return op;
}
long signed int decimal_to_other(long signed int outputnumber,long signed int outputbase)
{
long signed int op=0,p,k,s;
k=outputnumber;
p=1;
while(k!=0)
{
s=k%outputbase;
k=k/outputbase;
op=op+s*p;
p=p*10;
}
return op;
}
k=inputnumber;
p=1;
while(k!=0)
{
s=k%10;
k=k/10;
op=op+s*p;
p=p*inputbase;
}
return op;
}
long signed int decimal_to_other(long signed int outputnumber,long signed int outputbase)
{
long signed int op=0,p,k,s;
k=outputnumber;
p=1;
while(k!=0)
{
s=k%outputbase;
k=k/outputbase;
op=op+s*p;
p=p*10;
}
return op;
}
OUTPUT:
Enter the number and its base:5 10
Enter the base you want to convert the number to:2
The converted number is 101
/*Q 34 Write a simple code for binary search in c programming language
#include<stdio.h>
int main(){
int a[10],i,n,m,c=0,l,u,mid;
printf("Enter the size of an array: ");
scanf("%d",&n);
printf("Enter the elements in ascending order: ");
for(i=0;i<n;i++){
scanf("%d",&a[i]);
}
printf("Enter the number to be search: ");
scanf("%d",&m);
l=0,u=n-1;
while(l<=u){
mid=(l+u)/2;
if(m==a[mid]){
c=1;
break;
}
else if(m<a[mid]){
u=mid-1;
}
else
l=mid+1;
}
if(c==0)
printf("The number is
not found.");
else
printf("The number is
found.");
return 0;
}
Sample output:
Enter the size of an array: 5
Enter the elements in ascending order: 4 7 8
11 21
Enter the number to be search: 11
The number is found.
/* Q 47 Write a C program to
determine if the year is a leap year.*/
#include
<stdio.h>
int
main()
{
int year;
printf("Enter a year to check if it is a
leap year\n");
scanf("%d", &year);
if ( year%400 == 0)
printf("%d is a leap year.\n",
year);
else if ( year%100 == 0)
printf("%d is not a leap year.\n",
year);
else if ( year%4 == 0 )
printf("%d is a leap year.\n",
year);
else
printf("%d is not a leap year.\n",
year);
return 0;
}
Output:
Enter
a year to check if it is a leap year
2012
2012is a leap year
/*Q45 Write a C program to find the GCD of two
integer values.*/
#include
<stdio.h>
int
main() {
int a, b, x, y, t, gcd, lcm;
printf("Enter two integers\n");
scanf("%d%d", &x, &y);
a = x;
b = y;
while (b != 0) {
t = b;
b = a % b;
a = t;
}
gcd = a;
printf("Greatest common divisor of %d
and %d is %d\n", x, y, gcd);
return 0;
}
OUTPUT:
Enter
two integers
9
24
common
divisor of 9 and 24 is 3
/* Q 46 Write a C program to evaluate the
polynomial shown as
3X2 + 5X2 + 6
if x=5 */
#include
<stdio.h>
#define f(x)
((3*x*x)+(5*x*x)+6)
void
main()
{
printf(“\n The value of f(5) is %d”, f(5));
getch();
}
OUTPUT:
The
value of f(5) is 206
