题解 | 求四位数各个数位之和
求四位数各个数位之和
https://www.nowcoder.com/practice/91fd90931d2847b5855075c11cf90d08
#include <stdio.h>
#include <stdio.h>
int sum(int a)
{
if (a < 10)
return a;
int sum = 0;
int tmp = 0;
while (a)
{
/*tmp = a % 10;
sum += tmp; */
sum += (a % 10);
a /= 10;
}
return sum;
}
int main()
{
int a = 0;
scanf("%d", &a);
int ret = sum(a);
printf("%d\n", ret);
return 0;
}
