#包含“stdio.h”
void main()
{
int a,b,c,d,num,count = 0;
long sum = 0;
for(a = 1;a & lt9;a++)
for(b = 0;b & lt9;b++)
for(c = 0;c & lt9;c++)
for(d = 0;d & lt9;d++)
{
num = a * 1000+b * 100+c * 10+d;
if(num = = a * a * a * a+b * b * b * b+c * c * c * c+d * d * d)
{
count++;
sum+= num;
if(count & gt;1)printf("+");
printf("%d ",num);
}
}
Printf("=%d\n mean =%f\n ",sum,sum * 1.0/count);
}
運行結果:
1634+8208=9842
平均值=4921.000000