Question

C++6.0编写程序,求出2+4+6+8+10+12+14+……+50,并且显示最后结果.

Answer 1

#include<stdio.h>
void main()
{
int i=0,sum=0;
while(i<=50)
{
sum=sum+i;
i=i+2;
}
printf("总和为:%d\n",sum);
}

Answer 2

Answer 3

int i;
sum=0;
for (i=2;i<=50:i+=2)
{
sum+=i;
}
printf("%d",sum);

Answer 4

int i;
int s=0;
for i=0,i<=50,i+2
{
s=s+i;
}
cout s

Answer 5

#include <iostream>
using namespace std;
main(){

int i;
int s=0;
for(i=2;i<=50;i++){
s+=i;
i++;
}
cout<<s<<endl;
}