Sunday 31 July 2016
Program 18 Using While Loop
The sum of the digits of the qubes is equal to the given number is known as a Armstrong number.
Example:- (153,371,407)
#include<stdio.h>
#include<conio.h>
void main()
{
int n,sum=0,r,t=0;
clrscr();
printf("enter a number:");
scanf("%d",&n);
t=n;
while(n!=0)
{
r=n%10;
sum=sum+r*r*r;
n=n/10;
}
if(sum==t)
printf("the no is armstrang");
else
printf("the no is not armstrang");
getch();
}
|
Output:-
Explanation:
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Program 17 Using While Loop
| #include<stdio.h> #include<conio.h> void main() { int n,sum=0,r; clrscr(); printf("enter a number:"); scanf("%d",&n); while(n!=0) { r=n%10; sum=sum+r; n=n/10; } printf("the sum of the digits of the given no. is:=%d",sum); getch(); } |
Output:-
Explanation:
enter the number:34=3 + 4 =7
enter the number:59=5 + 9=14
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Program 16 Using While loop
| #include<stdio.h> #include<conio.h> void main() { int a,i,sum=0; clrscr(); printf("enter a range:"); scanf("%d",&a); i=1; while(i<=a) { sum=sum+i*i*i; i++; } printf("the sum of the Qube natural no is:=%d\n",sum); getch(); } |
Output:-
Explanation:-
The Number is :3 (1 + 2 + 3 )
Qube of (1*1*1+2*2*2+3*3*3) = 1 + 8 + 27 =36.
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Program 15 Using While loop
| #include<stdio.h> #include<conio.h> void main() { int a,i,sum=0; clrscr(); printf("enter a range:"); scanf("%d",&a); i=1; while(i<=a) { sum=sum+i*i; i++; } printf("the sum of the Squre natural no is:=%d\n",sum); getch(); } |
Output:-
Explanation:-
The Number is :4 (1 + 2 + 3 + 4)
Square of (1*1+2*2+3*3+4*4) = 1 + 4 + 9 + 16 =30.
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Program 14 Using While loop
The positive numbers 1, 2, 3, 4... are known as natural numbers. The programs below takes a positive integer as an input from the user and calculates the sum up to n.
| #include<stdio.h> #include<conio.h> void main() { int a,i,sum=0; clrscr(); printf("enter a range:"); scanf("%d",&a); i=1; while(i<=a) { sum=sum+i; i++; } printf("the sum of the natural no is:=%d\n",sum); getch(); } |
Output:-
Explanation:
enter the number:3=1+2+3 =6
enter the number:5=1+2+3+4+5=15
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Program 13 Using While loop
The sum of the factors of the given no. is equal to the twice of the given no. then the number is called Perfect no.
Ex:-
Number 6 is Perfect Number
Number 6 Factors =1,2,3,6
1*6=6
2*3=6
3*2=6
6*1=6
1+2+3+6=12 (6+6)
#include<stdio.h>
#include<conio.h>
void main()
{
int n,i,sum=0;
clrscr();
printf("enter a number:");
scanf("%d",&n);
i=1;
while(i<=n)
{
if(n%i==0)
sum=sum+i;
i++;
}
if(sum==n*2)
printf("the number is perfect number\n");
else
printf("the number is not perfect number");
getch();
}
|
Output:-
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Program 12 Using While loop
The number which has only two factors then the number is called as a Prime number.
(or)
A prime number is a whole number greater than 1, whose only two whole-number factors are 1 and itself. The first few prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29.
#include<stdio.h>
#include<conio.h> void main() { int n,i,fc=0; clrscr(); printf("enter a number:"); scanf("%d",&n); i=1; while(i<=n) { if(n%i==0) fc++; i++; } if(fc==2) printf("the number is prime number:"); else printf("the number is not prime number:");
getch();
} |
Output:-
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Program 11 Using While loop
| #include<stdio.h> #include<conio.h> void main() { int n,i,; clrscr(); printf("enter a number:"); scanf("%d",&n); i=1; printf(“Factors of the given no is:\n”); while(i<=n) { if(n%i==0) printf(“%d\n”,n); i++; } getch(); } |
Output:-
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_____________________________________________________Program 10 Using While loop
| #include<stdio.h> #include<conio.h> void main() { int i,ec=0,oc=0,r1,r2; clrscr(); printf("enter a r1 value:"); scanf("%d",&r1); printf("enter a r2 value:"); scanf("%d",&r2); i=r1; while(i<=r2) { if(i%2==0) ec++; else oc++; i++; } printf("the no. of even no's is:=%d\n",ec); printf("the no. of odd no's is:=%d",oc); getch(); } |
Output:-
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_____________________________________________________Program 9 Using While loop
#include<stdio.h>
#include<conio.h>
void main()
{
int a,b,i;
clrscr();
printf("enter starting year:");
scanf("%d",&a);
printf("enter ending year:");
scanf("%d",&b);
i=a;
while(i<=b)
{
if(i%4==0)
printf("%d\n",i);
i++;
}
getch();
}
|
Output:-
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Saturday 30 July 2016
Friday 29 July 2016
Program 8 Using While loop
| #include<stdio.h> #include<conio.h> void main() { int a,b,i; clrscr(); printf("enter starting range:"); scanf("%d",&a); printf("enter ending range:"); scanf("%d",&b); i=a; while(i<=b) { if(i%2==1) printf("%d",i); i++; } getch(); } |
Output:-
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