How can I write a program to add all the whole numbers from 1 to 100?

Question

the program should use the while loop

sorry guys using the c programing language.

dragongml, why not a semicolon after the i--?

Answer 1

//java statement
int x=1;
int sum=0;
while (x<=100)
{
sum+=x;
x++;
}
System.out.println("sum of whole numbers between 1 and 100 is= "+sum);

Answer 2

Well let's say you were adding the numbers from one to five one at a time.

You would do:
1+2 = 3
3 + 3 = 6
6 + 4 = 10
10 + 5 = 15

Do you see a pattern developing here?

You are taking the sum of the numbers from 1 to 2 and adding it to the next number in the sequence: 3.
Then you are taking the sum of the numbers from 1 to 3 and adding it to the next number in the sequence: 4
Then you are taking the sum of the numbers from 1 to 4 and adding it to the next number in the sequence: 5...

And you are DOing this WHILE the next number in the sequence is not greater than 100...

Do you get it?

Answer 3

You would need something like (pseudo code):

variables: Total, Counter as Integer

Total = 0
Count = 100

While Count >0
Total = Total + Count
Count = Count -1
End While

Display Total

Answer 4

do something like this in c++

int x

cin>>x

int y

y=(x(x+1))/2

cout>>y

where x is the largest number in the list.

Answer 5

int i =100;

int x=0;

while (i>0) {
x++;
i--

}

Answer 6

vb the for next statement