帮忙啊,C语言编程题目..

#include <stdio.h>
void main()
{
int i,j;
int sum1=0,sum2=0;
for(i=1;i<=10;i++)
{
if(i%2==0)
sum1+=i;
else
continue;
}
for(j=1;j<=100;j++)
{
if(j%2!=0)
sum2+=i;
else
continue;
}
printf("%d\n",sum1/2);
printf("%d\n",sum2/5);
}

#include<stdio.h>
#include<stdlib.h>

int main()
{
//题目一:1-10偶数相加再除以2
int i,sum=0;
for(i=2;i<=10;i+=2)
{
sum+=i;
}
printf("%d\n",sum/2);

//题目二:1-100奇数相相再除以5
sum=0;
for(i=1;i<=100;i+=2)
{
sum+=i;
}
printf("%d\n",sum/5);
system("PAUSE");
return 0;
}