题解 | #小乐乐求和#
小乐乐求和
https://www.nowcoder.com/practice/ce0b2eacd3d04647831358c2876e44ff
#include <stdio.h>
int main() {
int num;
scanf("%d",&num);
long sum = 0;//用long类型计算
int arr[num];
for (int i = 0; i < num; i++) {
sum =sum +i+1;
}
printf("%ld\n",sum);
return 0;
}
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