#include<stdio.h>
int main()
{
int a, n;
int sum = 0;
int temp = 0;
int i = 0;
printf("所求数字a:");
scanf("%d",&a);
printf("所求数字的前n项:");
scanf("%d",&n);
for(;i < n;i++){
temp = temp * 10 + a;
printf("%d+", temp);
sum = sum + temp;
}
printf("\n");
printf("sum=%d\n",sum);
return 0;
}
计算求和(求Sn=a+aa+aaa+aaaa+aaaaa的前n项之和,其中a是一个数字)
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转载自blog.csdn.net/WEIYANGBIN/article/details/106045048
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