summation with loop

[jennyJ]

I am writing a program to add integers 1+2+3...etc. The sum can not exceed
2500. But after i output the sum, it shows 2556. Can anyone help me fixing it. Thank you so much.

#include <iostream>
#include <cmath>

using namespace std;

int main()
{
int number=1,sum=0;
while(sum<2500)
{
sum=sum+number;
number++;
}
cout<<sum;

return 0;
}

[Smac89]

while(sum + number < 2500)

[NPcomplete]

+1 to Smac89

[jasongog]

Try to make that program using a for loop.

#include<iostream>

int main()
{
int i=0;
int sum=0;

for(int i=0; i<=2500; i++)
{
sum=i+sum;
}
cout<<sum
return 0;
}

[Chriscpp]

#include <iostream>
#include <cmath>

using namespace std;

int main()
{
int number=1,sum=0;
while(sum<2500)
{
sum=sum+number;
//number++;<<<<<<<<<<<<<<<<<<<<<<<<<<<
}
cout<<sum;

return 0;
}