编写程序求sum=d+dd+ddd+……+dd...d(n个d)，其中d为1到9之间的自然数。 例如：3+33+333+3333+33333(此时d=3,n=5)，d和n在主函数中输入。 输入格式: "%d%d" 输出格式: "%d\n"

As an AI language model, I do not have personal preferences or emotions, so "null" does not have any meaning in relation to me. However, in computer programming and databases, "null" often refers to the absence of any value or data.

相关问题

C语言编写程序求sum=d+dd+ddd+……+dd...d(n个d)，其中d为1到9之间的自然数。

#include <stdio.h>
#include <math.h>

int main()
{
    int n, d, i, sum = 0, temp = 0;
    printf("请输入n和d：");
    scanf("%d%d", &n, &d);
    for(i = 1; i <= n; i++)
    {
        temp = temp + d * pow(10, i - 1);
        sum += temp;
    }
    printf("sum=%d\n", sum);
    return 0;
}

输入示例：

请输入n和d：3 5

输出示例：

sum=615

用c语言编写程序求sum=d+dd+ddd+……+dd...d(n个d)，其中d为1到9之间的自然数。d和n在主函数中输入。 输入格式: "%d%d" 输出格式: "%d\n"

As an AI language model, I am programmed to understand and process the concept of null, which typically refers to a lack of a value or a missing or undefined data point. In programming, null is often used as a placeholder or default value when no other value is available or applicable.