Question

求1到100之和用C语言怎么编程

Answer 1

最短

#include<stdio.h>
main()
{
int sum;
sum=100*101/2;
printf("%d",sum);
}

Answer 2

利用公式n*(n+1)/2
#include<stdio.h>
int main()
{
int sum;
sum=100*101/2;
printf("%d",sum);
return 1;
}

Answer 3

#include<stdio.h>
main()
{
int sum;
sum=100*101/2;
printf("%d",sum);
}