编程题：求10至1000内奇数之和

gcc4.4.1测试结果为249975
#include <stdio.h>
void main(){
int i,sum=0;
for (i=11;i<1000;i=i+2)
{
sum=sum+i;
}
printf("sum=%d",sum);

}

VB
Dim i As Integer
Dim sum As Long
sum = 0
For i = 11 To 1000 Step 2
sum = sum + i
Next
Print sum

int i;
double s=0;
for(i=10;i<1000;i++)
if(i%2!=0)
s = s+i;
printf("%f",s);