#include <stdio.h> main() { int n, reverse = 0; printf("Enter a number to reverse\n"); scanf("%d",&n); while (n != 0) { reverse = reverse * 10; reverse = reverse + n%10; n = n/10; } printf("Reverse of entered number is = %d\n", reverse); return 0; }
Wednesday, August 29, 2012
c program to reverse a number
Decimal to binary conversion
#include <stdio.h>
int main()
{
int n, c, k;
printf("Enter an integer in decimal number system\n");
scanf("%d", &n);
printf("%d in binary number system is:\n", n);
for (c = 31; c >= 0; c--)
{
k = n >> c;
if (k & 1)
printf("1");
else
printf("0");
}
printf("\n");
return 0;
}
Palindrome number program c
Palindrome number algorithm
1. Get the number from user.2. Reverse it.
3. Compare it with the number entered by the user.
4. If both are same then print palindrome number
5. Else print not a palindrome number.
-----------------------------------------------------------
#include<stdio.h>
main()
{
int n, reverse = 0, temp;
printf("Enter a number to check if it is a palindrome or not\n");
scanf("%d",&n);
temp = n;
while( temp != 0 )
{
reverse = reverse * 10;
reverse = reverse + temp%10;
temp = temp/10;
}
if ( n == reverse )
printf("%d is a palindrome number.\n", n);
else
printf("%d is not a palindrome number.\n", n);
return 0;
}
c program to print pattern stars
#include<stdio.h> main() { int row, c, n, temp; printf("Enter the number of rows in pyramid of stars you wish to see "); scanf("%d",&n); temp = n; for ( row = 1 ; row <= n ; row++ ) { for ( c = 1 ; c < temp ; c++ ) printf(" "); temp--; for ( c = 1 ; c <= 2*row - 1 ; c++ ) printf("*"); printf("\n"); } return 0;
Code for Armstrong number in c
#include<stdio.h>
int main(){
int num,r,sum=0,temp;
printf("Enter a
number: ");
scanf("%d",&num);
temp=num;
while(num!=0)
{
r=num%10;
num=num/10;
sum=sum+(r*r*r);
}
if(sum==temp)
printf("%d is an
Armstrong number",temp);
else
printf("%d is
not an Armstrong number",temp);
return 0;
}
---------------------------------------------------------------------------------------
Sample output:
Enter a number: 153
153 is an Armstrong numberPascal triangle in c
1 1 1 1 2 1 1 3 3 1
---------------------------------------------------------------------
#include<stdio.h> long factorial(int); 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"); } return 0; } long factorial(int n) { int c; long result = 1; for( c = 1 ; c <= n ; c++ ) result = result*c; return ( result ); }
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