Print and Sum of all the Multiples of 3 or 5 up to
999.
Hints:
For example, to find the multiples
of 3, multiply 3 by 1, 3 by 2, 3 by 3, and so on. To find the multiples of 5,
multiply 5 by 1, 5 by 2, 5 by 3, and so on. The multiples are the products of
these multiplications.
Some examples of multiples can be
found below. In each example, the counting numbers 1 through 8 are used.
However, the list of multiples for a whole number is endless.
|
Example 1:
|
Find the multiples of the whole number
4.
|
|||||||
Multiplication:
|
4 x 1
|
4 x 2
|
4 x 3
|
4 x 4
|
4 x 5
|
4 x 6
|
4 x 7
|
4 x 8
|
Multiples of 4:
|
4
|
8
|
12
|
16
|
20
|
24
|
28
|
32
|
Solution:
|
The multiples of 4 are 4, 8, 12,
16, 20, 24, 28, 32,...
|
|||||||
Example
2:
|
Find
the multiples of the whole number 5.
|
|||||||
Multiplication:
|
5
x 1
|
5
x 2
|
5
x 3
|
5
x 4
|
5
x 5
|
5
x 6
|
5
x 7
|
5
x 8
|
Multiples
of 5:
|
5
|
10
|
15
|
20
|
25
|
30
|
35
|
40
|
Solution:
|
The
multiples of 5 are 5, 10, 15, 20, 25, 30, 35, 40,...
|
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Source Code:
#include<stdio.h>
int main()
{
int sum = 0;
int i;
printf("The multiples are :");
for (i=1; i < 1000; i++)
{
if (i % 5 == 0 || i % 3 == 0 )
{
printf(" %d",i);
sum += i;
}
}
printf(" \n\nThe sum is: %i\n\n", sum);
return 0;
}
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