Sunday, 6 March 2022
Saturday, 5 March 2022
20. Write a program to Print following: ( Character Pattren )
A
ABA
ABCBA
ABCDCBA
#include<stdio.h>
#include<conio.h>
void main()
{
int i,j,no;
char ch=65;
clrscr();
printf("enter number: ");
scanf("%d",&no);
printf("\n");
for(i=0; i<no; i++)
{
for(j=no-1; j>i; j--)
{
printf(" ");
}
for(j=65; j<=i+65; j++)
{
printf("%c",j);
}
for(j=i+64; j>=65; j--)
{
printf("%c",j);
}
printf("\n");
}
getch();
}
/* output:
enter number: 4
A
ABA
ABCBA
ABCDCBA
*/
19. Write a program to Print following:
1
0 1
0 1 0
1 0 1 0
#include<stdio.h>
#include<conio.h>
void main()
{
int i,j,no,k=1;
clrscr();
printf("enter number: ");
scanf("%d",&no);
for(i=1; i<=no; i++)
{
for(j=i; j<=no-1; j++)
{
printf(" ");
}
for(j=i; j>=1; j--)
{
printf("%d ",k%2);
k++;
}
printf("\n");
}
getch();
}
/* output:
enter number: 4
1
0 1
0 1 0
1 0 1 0
*/
18. Write a program to Print following:
1
0 1
1 0 1
0 1 0 1
#include<stdio.h>
#include<conio.h>
void main()
{
int i,j,no;
clrscr();
printf("enter number: ");
scanf("%d",&no);
printf("\n");
for(i=1; i<=no; i++)
{
for(j=i; j<=no-1; j++)
{
printf(" ");
}
for(j=i; j>=1; j--)
{
printf("%d ",j%2);
}
printf("\n");
}
getch();
}
/* output:
enter number: 4
1
0 1
1 0 1
0 1 0 1
*/
17. Write a program to Print following: ( character pattern program )
A
B C
D E F
G H I J
#include<stdio.h>
#include<conio.h>
void main()
{
int i,j,no;
char ch=65;
clrscr();
printf("enter number: ");
scanf("%d",&no);
printf("\n");
for(i=1; i<=no; i++)
{
for(j=i; j<=no-1; j++)
{
printf(" ");
}
for(j=i; j>=1; j--)
{
printf("%c ",ch);
ch++;
}
printf("\n");
}
getch();
}
/* output:
enter number: 4
A
B C
D E F
G H I J
*/
16. Write a program that accepts an integer N, if the integer N = 4,then print the pyramid :
4 4 4 4
3 3 3
2 2
1
#include<stdio.h>
#include<conio.h>
void main()
{
int i,j,no;
clrscr();
printf("enter number for pyramid: ");
scanf("%d",&no);
printf("\n");
for(i=no; i>=1; i--)
{
for(j=i; j<=no-1; j++)
{
printf(" ");
}
for(j=1; j<=i; j++)
{
printf("%d ",i);
}
printf("\n");
}
getch();
}
/* output:
enter number for pyramid: 4
4 4 4 4
3 3 3
2 2
1
*/
15. Write a program that accepts an integer N, if the integer N = 4, then print the pyramid :
1
121
12321
1234321
#include<stdio.h>
#include<conio.h>
void main()
{
int i,j,no;
clrscr();
printf("enter number for pyramid: ");
scanf("%d",&no);
printf("\n");
for(i=1; i<=no; i++)
{
for(j=no-1; j>=i; j--)
{
printf(" ");
}
for(j=1; j<=i; j++)
{
printf("%d",j);
}
for(j=i-1; j>=1; j--)
{
printf("%d",j);
}
printf("\n");
}
getch();
}
/* output:
enter number for pyramid: 4
1
121
12321
1234321
*/
14 Write a program to print following pyramid.
*
* *
* * *
* * * *
#include<stdio.h>
#include<conio.h>
void main()
{
int no,i,j;
clrscr();
printf("enter number for pyramid: ");
scanf("%d",&no);
printf("\n");
for(i=1; i<=no; i++)
{
for(j=no-1; j>=i; j--)
{
printf(" ");
}
for(j=1; j<=i; j++)
{
printf("* ");
}
printf("\n");
}
getch();
}
/* output:
enter number for pyramid: 4
*
* *
* * *
* * * *
*/
13. Write a C program to find 1+1/2+1/3+1/4+ …+1/n.
#include<stdio.h>
#include<conio.h>
void main()
{
int no;
float i,sum=0;
clrscr();
printf("enter number: ");
scanf("%d",&no);
printf("\n\n");
for(i=1; i<=no; i++)
{
printf("1/%0.2f + ",i);
sum = sum+(1 / i);
}
printf("\b\b= %0.2f",sum);
getch();
}
/* output:
enter number: 3
1/1.00 + 1/2.00 + 1/3.00 = 1.83
*/
12 Write a C program to find x1+x2+x3+x4+ ….+xn.
#include<stdio.h>
#include<conio.h>
void main()
{
int no,i,sum=0,x;
clrscr();
printf("enter number: ");
scanf("%d",&no);
printf("\nenter value of x: ");
scanf("%d",&x);
printf("\n\n");
for(i=1; i<=no; i++)
{
printf("x%d + ",i);
sum = sum + (x*i);
}
printf("\b\b\b = %d",sum);
getch();
}
/* output:
enter number: 6
enter value of x: 2
x1 + x2 + x3 + x4 + x5 + x6 = 42
*/
11. Write a program to print all the prime numbers ranging from 50 to 100.
#include<stdio.h>
#include<conio.h>
void main()
{
int i,j,prime=0;
clrscr();
printf("all the prime numbers raning from 50 to 100\n\n");
for(i=50; i<=100; i++)
{
prime = 0;
for(j=1; j<=i; j++)
{
if(i % j == 0)
{
prime++;
}
}
if(prime == 2)
{
printf("%d ",i);
}
}
getch();
}
/* output:
all the prime numbers raning from 50 to 100
53 59 61 67 71 73 79 83 89 97
*/
10. Write a program to check whether the given number is Prime or not.
#include<stdio.h>
#include<conio.h>
void main()
{
int i,no,prime=0;
clrscr();
printf("enter number: ");
scanf("%d",&no);
for(i=1; i<=no; i++)
{
if(no %i == 0)
{
prime++;
}
}
if(prime == 2)
{
printf("\n\n%d is a prime number",no);
}
else
{
printf("\n\n%d is not a prime number",no);
}
getch();
}
/* output:
enter number: 59
59 is a prime number
*/
9. Write a program to check whether given number by the user is Palindrome or not.
#include<stdio.h>
#include<conio.h>
void main()
{
long int no,temp,i,rem,rev=0;
clrscr();
printf("to check number palindrome or not");
printf("\n\nenter number: ");
scanf("%ld",&no);
temp = no;
for(i=0; no>0; i++)
{
rem = no % 10;
rev = rev * 10 + rem;
no = no / 10;
}
if(temp == rev)
{
printf("\n\nthis is palindrome number");
}
else
{
printf("\n\nthis is not palindrome number");
}
getch();
}
/* output:
to check number palindrome or not
enter number: 1234321
this is palindrome number
*/
8. Write a program to find the sum of first 100 odd nos. and even nos.
#include<stdio.h>
#include<conio.h>
void main()
{
int i,odd[100],even[100];
clrscr();
printf("first 100 even number:\n");
for(i=1; i<=100; i++)
{
if(i %2 == 0)
{
printf("%d ",i);
}
}
printf("\n\nfirst 100 odd number:\n");
for(i=1; i<=100; i++)
{
if(i %2 != 0)
{
printf("%d ",i);
}
}
getch();
}
/* output:
first 100 even number:
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48
50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94
96 98 100
first 100 odd number:
1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47
49 51 53 55 57 59 61 63 65 67 69 71 73 75 77 79 81 83 85 87 89 91 93
95 97 99
*/
7. Write a program to find GCD and LCM of given 2 numbers.
#include<stdio.h>
#include<conio.h>
void main()
{
int no1,no2,i,gcd,lcm;
clrscr();
printf("enter 1st number: ");
scanf("%d",&no1);
printf("\nenter 2nd number: ");
scanf("%d",&no2);
for(i=1; i<=no1 && i<=no2; i++)
{
if(no1 %i == 0 && no2 %i == 0)
{
gcd = i;
}
}
printf("\n\ngcd of %d and %d = %d",no1,no2,gcd);
lcm = ( no1 * no2) / gcd;
printf("\n\nlcm of %d and %d = %d",no1,no2,lcm);
getch();
}
/* output:
enter 1st number: 4
enter 2nd number: 6
gcd of 4 and 6 = 2
lcm of 4 and 6 = 12
*/
6. Write a program to generate Fibonacci series up to N numbers.
#include<stdio.h>
#include<conio.h>
void main()
{
int no,a=0,b=1,i,c;
clrscr();
printf("enter number: ");
scanf("%d",&no);
if(no <= 0)
{
printf("\nNot valid value");
}
else if(no == 1)
{
printf("\nfibonacci series: %d",a);
}
else if(no == 2)
{
printf("\nfibonacci series: %d %d",a,b);
}
else
{
printf("\nfibonacci series: ");
for(i=0; i<no; i++)
{
printf("%d ",a);
c = a+b;
a = b;
b = c;
}
}
getch();
}
/* output:
enter number: 8
fibonacci series: 0 1 1 2 3 5 8 13
*/
5. Write a program to find sum of the digits entered by the user.
#include<stdio.h>
#include<conio.h>
void main()
{
long int no,i,sum=0,rem,ary[99],k=0;
clrscr();
printf("enter digit: ");
scanf("%ld",&no);
for(i=0; no>0; i++)
{
rem = no % 10;
ary[i] = rem;
sum = sum + rem;
no = no / 10;
k++;
}
printf("\n\n");
for(i=k-1; i>=0; i--)
{
printf("%ld + ",ary[i]);
}
printf("\b\b= %ld",sum);
getch();
}
/* output:
enter digit: 123456
1 + 2 + 3 + 4 + 5 + 6 = 21
*/
4. Write a program to find reverse of a given number.
#include<stdio.h>
#include<conio.h>
void main()
{
long int no,i,rem,rev=0;
clrscr();
printf("enter number: ");
scanf("%ld",&no);
for(i=0; no>0; i++)
{
rem = no % 10;
rev = rev * 10 + rem;
no = no / 10;
}
printf("\n\nreverse number is: %ld",rev);
getch();
}
/* output:
enter number: 12243
reverse number is: 34221
*/
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