参考代码如下:
#include<stdio.h>
int main()
{
int i,sum=0,n;
scanf("%d",&n);
for(i=1;i<=n;++i)
sum+=i;
printf("S=%d",sum);
return 0;
}
追答![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/21a4462309f790526186458101f3d7ca7acbd5f0?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
#include
int main()
{
int i,j,sum=0,n,m;
scanf("%d",&n);
for(i=1;i<=n;++i){
m=0;
for(j=1;j<=i;++j)++m;
sum+=m;
}
printf("S(%d)=%d",n,sum);
return 0;
}
追问嗯